When Shefford awoke next morning and sat up on his bed of pinon boughs the dawn had broken cold with a ruddy gold brightness under the trees. Nas Ta Bega and Lassiter were busy around a camp-fire; the mustangs were haltered near by; Jane Withersteen combed out her long, tangled tresses with a crude wooden comb; and Fay Larkin was not in sight. As she had been missing from the group at sunset, so she was now at sunrise. Shefford went out to take his last look at Surprise Valley.

On the evening before the valley had been a place of dusky red veils and purple shadows, and now it was pink-walled, clear and rosy and green and white, with wonderful shafts of gold slanting down from the notched eastern rim. Fay stood on the promontory, and Shefford did not break the spell of her silent farewell to her wild home. A strange emotion abided with him and he knew he would always, all his life, regret leaving Surprise Valley.

Then the Indian called.

“Come, Fay,” said Shefford, gently.

And she turned away with dark, haunted eyes and a white, still face.

The somber Indian gave a silent gesture for Shefford to make haste. While they had breakfast the mustangs were saddled and packed. And soon all was in readiness for the flight. Fay was given Nack-yal, Jane the saddled horse Shefford had ridden, and Lassiter the Indian's roan. Shefford and Nas Ta Bega were to ride the blanketed mustangs, and the sixth and last one bore the pack. Nas Ta Bega set off, leading this horse; the others of the party lined in behind, with Shefford at the rear.

Nas Ta Bega led at a brisk trot, and sometimes, on level stretches of ground, at an easy canter; and Shefford had a grim realization of what this flight was going to be for these three fugitives, now so unaccustomed to riding. Jane and Lassiter, however, needed no watching, and showed they had never forgotten how to manage a horse. The Indian back-trailed yesterday's path for an hour, then headed west to the left, and entered a low pass. All parts of this plateau country looked alike, and Shefford was at some pains to tell the difference of this strange ground from that which he had been over. In another hour they got out of the rugged, broken rock to the wind-worn and smooth, shallow canyon. Shefford calculated that they were coming to the end of the plateau. The low walls slanted lower; the canyon made a turn; Nas Ta Bega disappeared; and then the others of the party. When Shefford turned the corner of wall he saw a short strip of bare, rocky ground with only sky beyond. The Indian and his followers had halted in a group. Shefford rode to them, halted himself, and in one sweeping glance realized the meaning of their silent gaze. But immediately Nas Ta Bega started down; and the mustangs, without word or touch, followed him. Shefford, however, lingered on the promontory.

His gaze seemed impelled and held by things afar—the great yellow-and-purple corrugated world of distance, now on a level with his eyes. He was drawn by the beauty and the grandeur of that scene and transfixed by the realization that he had dared to venture to find a way through this vast, wild, and upflung fastness. He kept looking afar, sweeping the three-quartered circle of horizon till his judgment of distance was confounded and his sense of proportion dwarfed one moment and magnified the next. Then he withdrew his fascinated gaze to adopt the Indian's method of studying unlimited spaces in the desert—to look with slow, contracted eyes from near to far.

His companions had begun to zigzag down a long slope, bare of rock, with yellow gravel patches showing between the scant strips of green, and here and there a scrub-cedar. Half a mile down, the slope merged into green level. But close, keen gaze made out this level to be a rolling plain, growing darker green, with blue lines of ravines, and thin, undefined spaces that might be mirage. Miles and miles it swept and relied and heaved to lose its waves in apparent darker level. A round, red rock stood isolated, marking the end of the barren plain, and farther on were other round rocks, all isolated, all of different shape. They resembled huge grazing cattle. But as Shefford gazed, and his sight gained strength from steadily holding it to separate features these rocks were strangely magnified. They grew and grew into mounds, castles, domes, crags—great, red, wind-carved buttes. One by one they drew his gaze to the wall of upflung rock. He seemed to see a thousand domes of a thousand shapes and colors, and among them a thousand blue clefts, each one a little mark in his sight, yet which he knew was a canyon. So far he gained some idea of what he saw. But beyond this wide area of curved lines rose another wall, dwarfing the lower, dark red, horizon—long, magnificent in frowning boldness, and because of its limitless deceiving surfaces, breaks, and lines, incomprehensible to the sight of man. Away to the eastward began a winding, ragged, blue line, looping back upon itself, and then winding away again, growing wider and bluer. This line was the San Juan canyon. Where was Joe Lake at that moment? Had he embarked yet on the river—did that blue line, so faint, so deceiving, hold him and the boat? Almost it was impossible to believe. Shefford followed the blue line all its length, a hundred miles, he fancied, down toward the west where it joined a dark, purple, shadowy cleft. And this was the Grand canyon of the Colorado. Shefford's eye swept along with that winding mark, farther and farther to the west, round to the left, until the cleft, growing larger and coming closer, losing its deception, was seen to be a wild and winding canyon. Still farther to the left, as he swung in fascinated gaze, it split the wonderful wall—a vast plateau now with great red peaks and yellow mesas. The canyon was full of purple smoke. It turned, it gaped, it lost itself and showed again in that chaos of a million cliffs. And then farther on it became again a cleft, a purple line, at last to fail entirely in deceiving distance.

Shefford imagined there was no scene in all the world to equal that. The tranquillity of lesser spaces was not here manifest. Sound, movement, life, seemed to have no fitness here. Ruin was there and desolation and decay. The meaning of the ages was flung at him, and a man became nothing. When he had gazed at the San Juan canyon he had been appalled at the nature of Joe Lake's Herculean task. He had lost hope, faith. The thing was not possible. But when Shefford gazed at that sublime and majestic wilderness, in which the Grand canyon was only a dim line, he strangely lost his terror and something else came to him from across the shining spaces. If Nas Ta Bega led them safely down to the river, if Joe Lake met them at the mouth of Nonnezoshe Boco, if they survived the rapids of that terrible gorge, then Shefford would have to face his soul and the meaning of this spirit that breathed on the wind.

He urged his mustang to the descent of the slope, and as he went down, slowly drawing nearer to the other fugitives, his mind alternated between this strange intimation of faith, this subtle uplift of his spirit, and the growing gloom and shadow in his love for Fay Larkin. Not that he loved her less, but more! A possible God hovering near him, like the Indian's spirit-step on the trail, made his soul the darker for Fay's crime, and he saw with light, with deeper sadness, with sterner truth.

More than once the Indian turned on his mustang to look up the slope and the light flashed from his dark, somber face. Shefford instinctively looked back himself, and then realized the unconscious motive of the action. Deep within him there had been a premonition of certain pursuit, and the Indian's reiterated backward glance had at length brought the feeling upward. Thereafter, as they descended, Shefford gradually added to his already wrought emotions a mounting anxiety.

No sign of a trail showed where the base of the slope rolled out to meet the green plain. The earth was gravelly, with dark patches of heavy silt, almost like cinders; and round, black rocks, flinty and glassy, cracked away from the hoofs of the mustangs. There was a level bench a mile wide, then a ravine, and then an ascent, and after that, rounded ridge and ravine, one after the other, like huge swells of a monstrous sea. Indian paint-brush vied in its scarlet hue with the deep magenta of cactus. There was no sage. Soapweed and meager grass and a bunch of cactus here and there lent the green to that barren; and it was green only at a distance. Nas Ta Bega kept on a steady, even trot. The sun climbed. The wind rose and whipped dust from under the mustangs.

Shefford looked back often, and the farther out in the plain he reached the higher loomed the plateau they had descended; and as he faced ahead again the lower sank the red-domed and castled horizon to the fore. The ravines became deeper, with dry rock bottoms, and the ridge-tops sharper, with outcroppings of yellow, crumbling ledges. Once across the central depression of that plain a gradual ascent became evident, and the round rocks grew clearer in sight, began to rise shine and grow. And thereafter every slope brought them nearer.

The sun was straight overhead and hot when Nas Ta Bega halted the party under the first lonely scrub-cedar. They all dismounted to stretch their limbs, and rest the horses. It was not a talkative group, Lassiter's comments on the never-ending green plain elicited no response. Jane Withersteen looked afar with the past in her eyes. Shefford felt Fay's wistful glance and could not meet it; indeed, he seemed to want to hide something from her. The Indian bent a falcon gaze on the distant slope, and Shefford did not like that intent, searching, steadfast watchfulness. Suddenly Nas Ta Bega stiffened and whipped the halter he held.

“Ugh!” he exclaimed.

All eyes followed the direction of his dark hand. Puffs of dust rose from the base of the long slope they had descended; tiny dark specks moved with the pace of a snail.

“Shadd!” added the Indian.

“I expected it,” said Shefford, darkly, as he rose.

“An' who's Shadd?” drawled Lassiter in his cool, slow speech.

Briefly Shefford explained, and then, looking at Nas Ta Bega, he added:

“The hardest-riding outfit in the country! We can't get away from them.”

Jane Withersteen was silent, but Fay uttered a low cry. Shefford did not look at either of them. The Indian began swiftly to tighten the saddle-cinches of his roan, and Shefford did likewise for Nack-yal. Then Shefford drew his rifle out of the saddle-sheath and Joe Lake's big guns from the saddle-bag.

“Here, Lassiter, maybe you haven't forgotten how to use these,” he said.

The old gun-man started as if he had seen ghosts. His hands grew clawlike as he reached for the guns. He threw open the cylinders, spilled out the shells, snapped back the cylinders. Then he went through motions too swift for Shefford to follow. But Shefford heard the hammers falling so swiftly they blended their clicks almost in one sound. Lassiter reloaded the guns with a speed comparable with the other actions. A remarkable transformation had come over him. He did not seem the same man. The mild eyes had changed; the long, shadowy, sloping lines were tense cords; and there was a cold, ashy shade on his face.

“Twelve years!” he muttered to himself. “I dropped them old guns back there where I rolled the rock.... Twelve years!”

Shefford realized the twelve years were as if they had never been. And he would rather have had this old gun-man with him than a dozen ordinary men.

The Indian spoke rapidly in Navajo, saying that once in the rocks they were safe. Then, after another look at the distant dust-puffs, he wheeled his mustang.

It was doubtful if the party could have kept near him had they been responsible for the gait of their mounts. The fact was that the way the Indian called to his mustang or some leadership in the one rode drew the others to a like trot or climb or canter. For a long time Shefford did not turn round; he knew what to expect. And when he did turn he was startled at the gain made by the pursuers. But he was encouraged as well by the looming, red, rounded peaks seemingly now so close. He could see the dark splits between the sloping curved walls, the pinon patches in the amphitheater under the circled walls. That was a wild place they were approaching, and, once in there, he believed pursuit would be useless. However, there were miles to go still, and those hard-riding devils behind made alarming decrease in the intervening distance. Shefford could see the horses plainly now. How they made the dust fly! He counted up to six—and then the dust and moving line caused the others to be indistinguishable.

At last only a long, gently rising slope separated the fugitives from that labyrinthine network of wildly carved rock. But it was the clear air that made the distance seem short. Mile after mile the mustangs climbed, and when they were perhaps half-way across that last slope to the rocks the first horse of the pursuers mounted to the level behind. In a few moments the whole band was strung out in sight. Nas Ta Bega kept his mustang at a steady walk, in spite of the gaining pursuers. There came a point, however, when the Indian, reaching comparatively level ground, put his mount to a swinging canter. The other mustangs broke into the same gait.

It became a race then, with the couple of miles between fugitives and pursuers only imperceptibly lessened. Nas Ta Bega had saved his mustangs and Shadd had ridden his to the limit. Shefford kept looking back, gripping his rifle, hoping it would not come to a fight, yet slowly losing that reluctance.

Sage began to show on the slope, and other kinds of brush and cedars straggled everywhere. The great rocks loomed closer, the red color mixed with yellow, and the slopes lengthening out, not so steep, yet infinitely longer than they had seemed at a distance.

Shefford ceased to feel the dry wind in his face. They were already in the lee of the wall. He could see the rock-squirrels scampering to their holes. The mustangs valiantly held to the gait, and at last the Indian disappeared between two rounded comers of cliff. The others were close behind. Shefford wheeled once more. Shadd and his gang were a mile in the rear, but coming fast, despite winded horses.

Shefford rode around the wall into a widening space thick with cedars. It ended in a bare slope of smooth rock. Here the Indian dismounted. When the others came up with him he told them to lead their horses and follow. Then he began the ascent of the rock.

It was smooth and hard, though not slippery. There was not a crack. Shefford did not see a broken piece of stone. Nas Ta Bega climbed straight up for a while, and then wound around a swell, to turn this way and that, always going up. Shefford began to see similar mounds of rock all around him, of every shape that could be called a curve. There were yellow domes far above, and small red domes far below. Ridges ran from one hill of rock to another. There were no abrupt breaks, but holes and pits and caves were everywhere, and occasionally, deep down, an amphitheater green with cedar and pinon. The Indian appeared to have a clear idea of where he wanted to go, though there was no vestige of a trail on those bare slopes. At length Shefford was high enough to see back upon the plain, but the pursuers were no longer in sight.

Nas Ta Bega led to the top of that wall, only to disclose to his followers another and a higher wall beyond, with a ridged, bare, wild, and scalloped depression between. Here footing began to be precarious for both man and beast. When the ascent of the second wall began it was necessary to zigzag up, slowly and carefully, taking advantage of every level bulge or depression. They must have consumed half an hour mounting this slope to the summit. Once there, Shefford drew a sharp breath with both backward and forward glances. Shadd and his gang, in single file, showed dark upon the bare stone ridge behind. And to the fore there twisted and dropped and curved the most dangerous slopes Shefford had ever seen. The fugitives had reached the height of stone wall, of the divide, and many of the drops upon this side were perpendicular and too steep to see the bottom.

Nas Ta Bega led along the ridge-top and then started down, following the waves in the rock. He came out upon a round promontory from which there could not have been any turning of a horse. The long slant leading down was at an angle Shefford declared impossible for the animals. Yet the Indian started down. His mustang needed urging, but at last edged upon the steep descent. Shefford and the others had to hold back and wait. It was thrilling to see the intelligent mustang. He did not step. He slid his fore hoofs a few inches at a time and kept directly behind the Indian. If he fell he would knock Nas Ta Bega off his feet and they would both roll down together. There was no doubt in Shefford's mind that the mustang knew this as well as the Indian. Foot by foot they worked down to a swelling bulge, and here Nas Ta Bega left his mustang and came back for the pack-horse. It was even more difficult to get this beast down. Then the Indian called for Lassiter and Jane and Fay to come down. Shefford began to keep a sharp lookout behind and above, and did not see how the three fared on the slope, but evidently there was no mishap. Nas Ta Bega mounted the slope again, and at the moment sight of Shadd's dark bays silhouetted against the sky caused Shefford to call out:

“We've got to hurry!”

The Indian led one mustang and called to the others. Shefford stepped close behind. They went down in single file, inch by inch, foot by foot, and safely reached the comparative level below.

“Shadd's gang are riding their horses up and down these walls!” exclaimed Shefford.

“Shore,” replied Lassiter.

Both the women were silent.

Nas Ta Bega led the way swiftly to the right. He rounded a huge dome, climbed a low, rolling ridge, descended and ascended, and came out upon the rim of a steep-walled amphitheater. Along the rim was a yard-wide level, with the chasm to the left and steep slope to the right. There was no time to flinch at the danger, when an even greater danger menaced from the rear. Nas Ta Bega led, and his mustang kept at his heels. One misstep would have plunged the animal to his death. But he was surefooted and his confidence helped the others. At the apex of the curve the only course led away from the rim, and here there was no level. Four of the mustangs slipped and slid down the smooth rock until they stopped in a shallow depression. It cost time to get them out, to straighten pack and saddles. Shefford thought he heard a yell in the rear, but he could not see anything of the gang.

They rounded this precipice only to face a worse one. Shefford's nerve was sorely tried when he saw steep slants everywhere, all apparently leading down into chasms, and no place a man, let alone a horse, could put a foot with safety. Nevertheless the imperturbable Indian never slacked his pace. Always he appeared to find a way, and he never had to turn back. His winding course, however, did not now cover much distance in a straight line, and herein lay the greatest peril. Any moment Shadd and his men might come within range.

Upon a particularly tedious and dangerous side of rocky hill the fugitives lost so much time that Shefford grew exceedingly alarmed. Still, they accomplished it without accident, and their pursuers did not heave in sight. Perhaps they were having trouble in a bad place.

The afternoon was waning. The red sun hung low above the yellow mesa to the left, and there was a perceptible shading of light.

At last Nas Ta Bega came to a place that halted him. It did not look so bad as places they had successfully passed. Yet upon closer study Shefford did not see how they were to get around the neck of the gully at their feet. Presently the Indian put the bridle over the head of his mustang and left him free. He did likewise for two more mustangs, while Lassiter and Shefford rendered a like service to theirs. Then the Indian started down, with his mustang following him. The pack-animal came next, then Fay and Nack-yal, then Lassiter and his mount, with Jane and hers next, and Shefford last. They followed the Indian, picking their steps swiftly, looking nowhere except at the stone under their feet. The right side of the chasm was rimmed, the curve at the head crossed, and then the real peril of this trap had to be faced. It was a narrow slant of ledge, doubling back parallel with the course already traversed.

A sharp warning cry from Nas Ta Bega scarcely prepared Shefford for hoarse yells, and then a rattling rifle-volley from the top of the slope opposite. Bullets thudded on the cliff, whipped up red dust, and spanged and droned away.

Fay Larkin screamed and staggered back against the wall. Nack-yal was hit, and with frightened snort he reared, pawed the air, and came down, pounding the stone. The mustang behind him went to his knees, sank with his head over the rim, and, slipping off, plunged into the depths. In an instant a dull crash came up.

For a moment there was imminent peril for the horses, more in the yawning hole than in the spanging of badly aimed bullets. Lassiter drew Jane up a little slope out of the way of the frightened mustangs, and Shefford, risking his neck, rushed to Fay. She was holding her arm, which was bleeding. Unheeding the rain of bullets, he half carried, half dragged her along the slope of the low bluff, where he hid behind a corner till the Indian drove the mustangs round it. Shefford's swift fingers were wet and red with the blood from Fay's arm when he had bound the wound with his scarf. Lassiter had gotten around with Jane and was calling Shefford to hurry.

It had been Shefford's idea to halt there and fight. But he did not want to send Fay on alone, so he hurried ahead with her. The Indian had the horses going fast on a long level, overhung by bulging wall. Lassiter and Jane were looking back. Shefford, becoming aware of a steep slope to his left, looked down to see a narrow chasm and great crevices in the cliffs, with bunches of cedars here and there.

Presently Nas Ta Bega disappeared with the mustangs. He had evidently turned off to go down behind the split cliffs. Shefford and Fay caught up with Lassiter and Jane, and, panting, hurrying, looking backward and then forward, they kept on, as best they could, in the Indian's course. Shefford made sure they had lost him, when he appeared down to the left. Then they all ran to catch up with him. They went around the chasm, and then through one of the narrow cracks to come out upon the rim, among cedars. Here the Indian waited for them. He pointed down another long swell of naked stone to a narrow green split which was evidently different from all these curved pits and holes and abysses, for this one had straight walls and wound away out of sight. It was the head of a canyon.

“Nonnezoshe Boco!” said the Indian.

“Nas Ta Bega, go on!” replied Shefford. “When Shadd comes out on that slope above he can't see you—where you go down. Hurry on with the horses and women. Lassiter, you go with them. And if Shadd passes me and comes up with you—do your best.... I'm going to ambush that Piute and his gang!”

“Shore you've picked out a good place,” replied Lassiter.

In another moment Shefford was alone. He heard the light, soft pat and slide of the hoofs of the mustangs as they went down. Presently that sound ceased.

He looked at the red stain on his hands—from the blood of the girl he loved. And he had to stifle a terrible wrath that shook his frame. In regard to Shadd's pursuit, it had not been blood that he had feared, but capture for Fay. He and Nas Ta Bega might have expected a shot if they resisted, but to wound that unfortunate girl—it made a tiger out of him. When he had stilled the emotions that weakened and shook him and reached cold and implacable control of himself, he crawled under the cedars to the rim and, well hidden, he watched and waited.

Shadd appeared to be slow for the first time since he had been sighted. With keen eyes Shefford watched the corner where he and the others had escaped from that murderous volley. But Shadd did not come.

The sun had lost its warmth and was tipping the lofty mesa to his right. Soon twilight would make travel on those walls more perilous and darkness would make it impossible. Shadd must hurry or abandon the pursuit for that day. Shefford found himself grimly hopeful.

Suddenly he heard the click of hoofs. It came, faint yet clear, on the still air. He glued his sight upon that corner where he expected the pursuers to appear. More cracks of hoofs pierced his ear, clearer and sharper this time. Presently he gathered that they could not possibly come from beyond the corner he was watching. So he looked far to the left of that place, seeing no one, then far to the right. Out over a bulge of stone he caught sight of the bobbing head of a horse—then another—and still another.

He was astounded. Shadd had gone below that place where the attack had been made and he had come up this steep slope. More horses appeared—to the number of eight. Shefford easily recognized a low, broad, squat rider to be Shadd. Assuredly the Piute did not know this country. Possibly, however, he had feared an ambush. But Shefford grew convinced that Shadd had not expected an ambush, or at least did not fear it, and had mistaken the Indian's course. Moreover, if he led his gang a few rods farther up that slope he would do worse than make a mistake—he would be facing a double peril.

What fearless horsemen these Indians were! Shadd was mounted, as were three others of his gang. Evidently the white men, the outlaws, were the ones on foot. Shefford thrilled and his veins stung when he saw these pursuers come passing what he considered the danger mark. But manifestly they could not see their danger. Assuredly they were aware of the chasm; however, the level upon which they were advancing narrowed gradually, and they could not tell that very soon they could not go any farther nor could they turn back. The alternative was to climb the slope, and that was a desperate chance.

They came up, now about on a level with Shefford, and perhaps three hundred yards distant. He gripped his rifle with a fatal assurance that he could kill one of them now. Still he waited. Curiosity consumed him because every foot they advanced heightened their peril. Shefford wondered if Shadd would have chosen that course if he had not supposed the Navajo had chosen it first. It was plain that one of the walking Piutes stooped now and then to examine the rock. He was looking for some faint sign of a horse track.

Shadd halted within two hundred yards of where Shefford lay hidden. His keen eye had caught the significance of the narrowing level before he had reached the end. He pointed and spoke. Shefford heard his voice. The others replied. They all looked up at the steep slope, down into the chasm right below them, and across into the cedars. The Piute in the rear succeeded in turning his horse, went back, and began to circle up the slope. The others entered into an argument and they became more closely grouped upon the narrow bench. Their mustangs were lean, wiry, wild, vicious, and Shefford calculated grimly upon what a stampede might mean in that position.

Then Shadd turned his mustang up the slope. Like a goat he climbed. Another Indian in the rear succeeded in pivoting his steed and started back, apparently to circle round and up. The others of the gang appeared uncertain. They yelled hoarsely at Shadd, who halted on the steep slant some twenty paces above them. He spoke and made motions that evidently meant the climb was easy enough. It looked easy for him. His dark face flashed red in the rays of the sun.

At this critical moment Shefford decided to fire. He meant to kill Shadd, hoping if the leader was gone the others would abandon the pursuit. The rifle wavered a little as he aimed, then grew still. He fired. Shadd never flinched. But the fiery mustang, perhaps wounded, certainly terrified, plunged down with piercing, horrid scream. Shadd fell under him. Shrill yells rent the air. Like a thunderbolt the sliding horse was upon men and animals below.

A heavy shock, wild snorts, upflinging heads and hoofs, a terrible tramping, thudding, shrieking melee, then a brown, twisting, tangled mass shot down the slant over the rim!

Shefford dazedly thought he saw men running. He did see plunging horses. One slipped, fell, rolled, and went into the chasm.

Then up from the depths came a crash, a long, slipping roar. In another instant there was a lighter crash and a lighter sliding roar.

Two horses, shaking, paralyzed with fear, were left upon the narrow level. Beyond them a couple of men were crawling along the stone. Up on the level stood the two Indians, holding down frightened horses, and staring at the fatal slope.

And Shefford lay there under the cedar, in the ghastly grip of the moment, hardly comprehending that his ill-aimed shot had been a thunderbolt.

He did not think of shooting at the Piutes; they, however, recovering from their shock, evidently feared the ambush, for they swiftly drew up the slope and passed out of sight. The frightened horses below whistled and tramped along the lower level, finally vanishing. There was nothing left on the bare wall to prove to Shefford that it had been the scene of swift and tragic death. He leaned from his covert and peered over the rim. Hundreds of feet below he saw dark growths of pinyons. There was no sign of a pile of horses and men, and then he realized that he could not tell the number that had perished. The swift finale had been as stunning to him as if lightning had struck near him.

Suddenly it flashed over him what state of suspense and torture Fay and Jane must be in at that very moment. And, leaping up, he ran out of the cedars to the slope behind and hurried down at risk of limb. The sun had set by this time. He hoped he could catch up with the party before dark. He went straight down, and the end of the slope was a smooth, low wall. The Indian must have descended with the horses at some other point. The canyon was about fifty yards wide and it headed under the great slope of Navajo Mountain. These smooth, rounded walls appeared to end at its low rim.

Shefford slid down upon a grassy bank, and finding the tracks of the horses, he followed them. They led along the wall. As soon as he had assured himself that Nas Ta Bega had gone down the canyon he abandoned the tracks and pushed ahead swiftly. He heard the soft rush of running water. In the center of the canyon wound heavy lines of bright-green foliage, bordering a rocky brook. The air was close, warm, and sweet with perfume of flowers. The walls were low and shelving, and soon lost that rounded appearance peculiar to the wind-worn slopes above. Shefford came to where the horses had plowed down a gravelly bank into the clear, swift water of the brook. The little pools of water were still muddy. Shefford drank, finding the water cold and sweet, without the bitter bite of alkali. He crossed and pushed on, running on the grassy levels. Flowers were everywhere, but he did not notice them particularly. The canyon made many leisurely turns, and its size, if it enlarged at all, was not perceptible to him yet. The rims above him were perhaps fifty feet high. Cottonwood-trees began to appear along the brook, and blossoming buck-brush in the corners of wall.

He had traveled perhaps a mile when Nas Ta Bega, appearing to come out of the thicket, confronted him.

“Hello!” called Shefford. “Where're Fay—and the others?”

The Indian made a gesture that signified the rest of the party were beyond a little way. Shefford took Nas Ta Bega's arm, and as they walked, and he panted for breath, he told what had happened back on the slopes.

The Indian made one of his singular speaking sweeps of hand, and he scrutinized Shefford's face, but he received the news in silence. They turned a corner of wall, crossed a wide, shallow, boulder-strewn place in the brook, and mounted the bank to a thicket. Beyond this, from a clump of cottonwoods, Lassiter strode out with a gun in each hand. He had been hiding.

“Shore I'm glad to see you,” he said, and the eyes that piercingly fixed on Shefford were now as keen as formerly they had been mild.

“Gone! Lassiter—they're gone,” broke out Shefford. “Where's Fay—and Jane?”

Lassiter called, and presently the women came out of the thick brake, and Fay bounded forward with her swift stride, while Jane followed with eager step and anxious face. Then they all surrounded Shefford.

“It was Shadd—and his gang,” panted Shefford. “Eight in all. Three or four Piutes—the others outlaws. They lost track of us. Went below the place—where they shot at us. And they came up—on a bad slope.”

Shefford described the slope and the deep chasm and how Shadd led up to the point where he saw his mistake and then how the catastrophe fell.

“I shot—and missed,” repeated Shefford, with the sweat in beads on his pale face. “I missed Shadd. Maybe I hit the horse. He plunged—reared—fell back—a terrible fall—right upon that bunch of horses and men below.... In a horrible, wrestling, screaming tangle they slid over the rim! I don't know how many. I saw some men running along. I saw three other horses plunging. One slipped and went over. ... I have no idea how many, but Shadd and some of his gang went to destruction.”

“Shore thet's fine!” said Lassiter. “But mebbe I won't get to use them guns, after all.”

“Hardly on that gang,” laughed Shefford. “The two Piutes and what others escaped turned back. Maybe they'll meet a posse of Mormons—for of course the Mormons will track us, too—and come back to where Shadd lost his life. That's an awful place. Even the Piute got lost—couldn't follow Nas Ta Bega. It would take any pursuers some time to find how we got in here. I believe we need not fear further pursuit. Certainly not to-night or to-morrow. Then we'll be far down the canyon.”

When Shefford concluded his earnest remarks the faces of Fay and Jane had lost the signs of suppressed dread.

“Nas Ta Bega, make camp here,” said Shefford. “Water—wood—grass—why, this 's something like.... Fay, how's your arm?”

“It hurts,” she replied, simply.

“Come with me down to the brook and let me wash and bind it properly.”

They went, and she sat upon a stone while he knelt beside her and untied his scarf from her arm. As the blood had hardened, it was necessary to slit her sleeve to the shoulder. Using his scarf, he washed the blood from the wound, and found it to be merely a cut, a groove, on the surface.

“That's nothing,” Shefford said, lightly. “It'll heal in a day. But there'll always be a scar. And when we—we get back to civilization, and you wear a pretty gown without sleeves, people will wonder what made this mark on your beautiful arm.”

Fay looked at him with wonderful eyes. “Do women wear gowns without sleeves?” she asked.

“They do.”

“Have I a—beautiful arm?”

She stretched it out, white, blue-veined, the skin fine as satin, the lines graceful and flowing, a round, firm, strong arm.

“The most beautiful I ever saw,” he replied.

But the pleasure his compliment gave her was not communicated to him. His last impression of that right arm had been of its strength, and his mind flashed with lightning swiftness to a picture that haunted him—Waggoner lying dead on the porch with that powerfully driven knife in his breast. Shefford shuddered through all his being. Would this phantom come often to him like that? Hurriedly he bound up her arm with the scarf and did not look at her, and was conscious that she felt a subtle change in him.

The short twilight ended with the fugitives comfortable in a camp that for natural features could not have been improved upon. Darkness found Fay and Jane asleep on a soft mossy bed, a blanket tucked around them, and their faces still and beautiful in the flickering camp-fire light. Lassiter did not linger long awake. Nas Ta Bega, seeing Shefford's excessive fatigue, urged him to sleep. Shefford demurred, insisting that he share the night-watch. But Nas Ta Bega, by agreeing that Shefford might have the following night's duty, prevailed upon him.

Shefford seemed to shut his eyes upon darkness and to open them immediately to the light. The stream of blue sky above, the gold tints on the western rim, the rosy, brightening colors down in the canyon, were proofs of the sunrise. This morning Nas Ta Bega proceeded leisurely, and his manner was comforting. When all was in readiness for a start he gave the mustang he had ridden to Shefford, and walked, leading the pack-animal.

The mode of travel here was a selection of the best levels, the best places to cross the brook, the best banks to climb, and it was a process of continual repetition. As the Indian picked out the course and the mustangs followed his lead there was nothing for Shefford to do but take his choice between reflection that seemed predisposed toward gloom and an absorption in the beauty, color, wildness, and changing character of Nonnezoshe Boco.

Assuredly his experience in the desert did not count in it a trip down into a strange, beautiful, lost canyon such as this. It did not widen, though the walls grew higher. They began to lean and bulge, and the narrow strip of sky above resembled a flowing blue river. Huge caverns had been hollowed out by some work of nature, what, he could not tell, though he was sure it could not have been wind. And when the brook ran close under one of these overhanging places the running water made a singular, indescribable sound. A crack from a hoof on a stone rang like a hollow bell and echoed from wall to wall. And the croak of a frog—the only living creature he had so far noted in the canyon—was a weird and melancholy thing.

Fay rode close to him, and his heart seemed to rejoice when she spoke, when she showed how she wanted to be near him, yet, try as he might, he could not respond. His speech to her—what little there was—did not come spontaneously. And he suffered a remorse that he could not be honestly natural to her. Then he would drive away the encroaching gloom, trusting that a little time would dispel it.

“We are deeper down than Surprise Valley,” said Fay.

“How do you know?” he asked.

“Here are the pink and yellow sago-lilies. You remember we went once to find the white ones? I have found white lilies in Surprise Valley, but never any pink or yellow.”

Shefford had seen flowers all along the green banks, but he had not marked the lilies. Here he dismounted and gathered several. They were larger than the white ones of higher altitudes, of the same exquisite beauty and fragility, of such rare pink and yellow hues as he had never seen. He gave the flowers to Fay.

“They bloom only where it's always summer,” she said.

That expressed their nature. They were the orchids of the summer canyon. They stood up everywhere starlike out of the green. It was impossible to prevent the mustangs treading them under hoof. And as the canyon deepened, and many little springs added their tiny volume to the brook, every grassy bench was dotted with lilies, like a green sky star-spangled. And this increasing luxuriance manifested itself in the banks of purple moss and clumps of lavender daisies and great clusters of yellow violets. The brook was lined by blossoming buck-rush; the rocky corners showed the crimson and magenta of cactus; ledges were green with shining moss that sparkled with little white flowers. The hum of bees filled the air.

But by and by this green and colorful and verdant beauty, the almost level floor of the canyon, the banks of soft earth, the thickets and the clumps of cotton-woods, the shelving caverns and the bulging walls—these features gradually were lost, and Nonnezoshe Boco began to deepen in bare red and white stone steps, the walls sheered away from one another, breaking into sections and ledges, and rising higher and higher, and there began to be manifested a dark and solemn concordance with the nature that had created this rent in the earth.

There was a stretch of miles where steep steps in hard red rock alternated with long levels of round boulders. Here one by one the mustangs went lame. And the fugitives, dismounting to spare the faithful beasts, slipped and stumbled over these loose and treacherous stones. Fay was the only one who did not show distress. She was glad to be on foot again and the rolling boulders were as stable as solid rock for her.

The hours passed; the toil increased; the progress diminished; one of the mustangs failed entirely and was left; and all the while the dimensions of Nonnezoshe Boco magnified and its character changed. It became a thousand-foot walled canyon, leaning, broken, threatening, with great yellow slides blocking passage, with huge sections split off from the main wall, with immense dark and gloomy caverns. Strangely, it had no intersecting canyon. It jealously guarded its secret. Its unusual formations of cavern and pillar and half-arch led the mind to expect any monstrous stone-shape left by an avalanche or cataclysm.

Down and down the fugitives toiled. And now the stream-bed was bare of boulders, and the banks of earth. The floods that had rolled down that canyon had here borne away every loose thing. All the floor was bare red and white stone, polished, glistening, slippery, affording treacherous foothold. And the time came when Nas Ta Bega abandoned the stream-bed to take to the rock-strewn and cactus-covered ledges above.

Jane gave out and had to be assisted upon the weary mustang. Fay was persuaded to mount Nack-yal again. Lassiter plodded along. The Indian bent tired steps far in front. And Shefford traveled on after him, footsore and hot.

The canyon widened ahead into a great, ragged, iron-hued amphitheater, and from there apparently turned abruptly at right angles. Sunset rimmed the walls. Shefford wondered dully when the Indian would halt to camp. And he dragged himself onward with eyes down on the rough ground.

When he raised them again the Indian stood on a point of slope with folded arms, gazing down where the canyon veered. Something in Nas Ta Bega's pose quickened Shefford's pulse and then his steps. He reached the Indian and the point where he, too, could see beyond that vast jutting wall that had obstructed his view.

A mile beyond all was bright with the colors of sunset, and spanning the canyon in the graceful shape arid beautiful hues of a rainbow was a magnificent stone bridge.

“Nonnezoshe!” exclaimed the Navajo, with a deep and sonorous roll in his voice.