What Jerusalem and Palestine are to Christendom this, and vastly more, Mecca and Arabia are to the Mohammedan world. Not only is this land the cradle of their religion and the birthplace of their prophet, the shrine toward which, for centuries, prayers and pilgrimage have gravitated; but Arabia is also, according to universal Moslem tradition, the original home of Adam after the fall and the home of all the older patriarchs. The story runs that when the primal pair fell from their estate of bliss in the heavenly paradise, Adam landed on a mountain in Ceylon and Eve fell at Jiddah, on the western coast of Arabia. After a hundred years of wandering they met near Mecca, and here Allah constructed for them a tabernacle, on the site of the present Kaaba. He put in its foundation the famous stone once whiter than snow, but since turned black by the sins of pilgrims! In proof of these statements travellers are shown the Black stone at Mecca and the tomb of Eve near Jiddah. Another accepted tradition says that Mecca stands on a spot exactly beneath God’s throne in heaven.

Without reference to these wild traditions, which are soberly set down as facts by Moslem historians, Arabia is a land of perpetual interest to the geographer, and the historian.

Since Niebuhr’s day many intrepid travellers have surveyed the coasts and penetrated into the interior, but his charge that we are ignorant of the real character of the vast peninsula is still true as far as it relates to the southern and southeastern districts. No traveller has yet crossed the northern boundary of Hadramaut and explored the Dahna desert, also called the Roba-el-Khali, or “empty abode.” The vast territory between the peninsula of Katar and the mountains of Oman is also practically a blank on the best maps. Indeed the only noteworthy map of that portion of the peninsula is that of Ptolemy reproduced by Sprenger in his “Alte Geographie Arabiens.”

Arabia has well-defined boundaries everywhere except on the north. Eastward are the waters of the Persian Gulf, the Strait of Ormuz and the Gulf of Oman. The entire southern coast is washed by the Indian Ocean which reaches to Bab-el-Mandeb “The Gate-of-tears,” from which point the Red Sea and the Gulf of Akaba form the western boundary. The undefined northern desert, in some places a sea of sand, completes the isolation which has led the Arabs themselves to call the peninsula their “Island” (Jezirat-el-Arab). In fact the northern boundary will probably never be defined accurately. The so-called “Syrian desert,” reaching to about the thirty-fifth parallel might better be regarded as the Arabian desert, for in physical and ethnical features it bears much greater resemblance to the southern peninsula than to the surrounding regions of Syria and Mesopotamia. Bagdad is properly an Arabian city and to the Arabs of the north is as much a part of the peninsula as is Aden to those of the southwest. The true, though shifting, northern boundary of Arabia would be the limit of Nomad encampments, but for convenience and practical purposes a boundary line may be drawn from the Mediterranean along the thirty-third parallel to Busrah.

Thus the shores of Arabia stretch from Suez to the Euphrates delta for a total length of nearly 4,000 miles. This coast-line has comparatively few islands or inlets, except in the Persian Gulf. The Red Sea coast is fringed by extensive coral reefs, dangerous to navigation, but from Aden to Muscat the coast is elevated and rocky, and contains several good harbors. Eastern Arabia has a low, flat coast-line made of coral-rock with here and there volcanic headlands. Farsan, off the Tehamah coast, famous as the centre for Arab slave-dhows; Perim, where English batteries command the gate of the Red Sea; the Kuria-Muria group in the Indian Ocean; and the Bahrein archipelago in the Persian Gulf, are the only important islands. Socotra, although occupied by an Arab population and historically Arabian, is by geographers generally attached to Africa. This island is however under the Indian government, and, once Christian, is now wholly Mohammedan.

The greatest length of the peninsula is about 1,000 miles, its average breadth 600, and its area somewhat over 1,000,000 square miles. It is thus over four times the size of France or larger than the United States east of the Mississippi River.

Arabia, until quite recently, has generally been regarded as a vast expanse of sandy desert. Recent explorations have proved this idea quite incorrect, and a large part of the region still considered desert is as yet unexplored. Palgrave, in his “Central Arabia” gives an excellent summary of the physical characteristics of the whole peninsula as he saw it. Since his time Hadramaut has been partially explored and the result confirms his statements: “The general type of Arabia is that of a central table-land surrounded by a desert ring sandy to the south, west and east, stony to the north. This outlying circle is in its turn girt by a line of mountains low and sterile for the most, but attaining in Yemen and Oman considerable height, breadth and fertility; while beyond these a narrow rim of coast is bordered by the sea. The surface of the midmost table-land equals somewhat less than one-half of the entire peninsula; and its special demarkations are much affected, nay often absolutely fixed, by the windings and inrunnings of the Nefud (sandy desert). If to these central highlands or Nejd, taking that word in its wider sense, we add whatever spots of fertility belong to the outer circles, we shall find that Arabia contains about two-thirds of cultivated or at least of cultivatable land, with a remaining third of irreclaimable desert, chiefly on the south.”

From this description it is evident that the least attractive part of the country is the coast. This may be the reason that Arabia has been so harshly judged, as to climate and soil and so much neglected by those who only knew of it from the captains who had touched its coast in the Red Sea and the Persian Gulf. Nothing is more surprising, than to pass through the barren cinder gateway of Aden up the mountain passes into the marvellous fertility and delightful climate of Yemen. Arabia like the Arab, has a rough, frowning exterior but a warm, hospitable heart.

From the table-land of Nejd, which has an average elevation of about 3,000 feet above the sea, there is a gradual ascent southward to the highlands of Yemen and Oman where there are mountain peaks as high as 8,000 and 10,000 feet. This diversity of surface causes an equal diversity of climate. The prevailing conditions are intense heat and dryness, and the world-zone of maximum heat in July embraces nearly the entire peninsula. On the coast the heat is more trying because of the moisture from the enormous evaporation of the land-locked basins. During part of the summer there is scarcely any difference in the register of the wet and dry-bulb thermometer. In the months of June, July and August, 1897, the averages of maximum temperature at Busrah were 100°, 103-1/2° and 102° F.; and the minimum 84°, 86-1/2° and 84° F. Nejd has a salubrious climate, while in Yemen and Oman on the highlands the mercury even in July seldom rises above 85°. In July, 1892, I passed in one day’s journey from a shade temperature of 110° F. on the coast at Hodeidah to one of 55° at Menakha on the mountains. At Sanaa there is frost for three months in the year, and Jebel Tobeyk in northwest Arabia is covered with snow all winter. In fact, all northern Arabia has a winter season with cold rains and occasional frosts.

The geology of the peninsula is of true Arabian simplicity. According to Doughty it consists of a foundation stock of plutonic (igneous) rock whereon lie sandstone, and above that limestone. Going from Moab to Sinai we cross the strata in the reverse order, while in the depression of the gulf of Akaba the three strata are in regular order although again overtopped by the granite of the mountains. Fossils are very rare, but coral formation is common all along the coast. Volcanic formations and lava (called by the Arabs, harrat) crop out frequently, as in the region of Medina and Khaibar. In going by direct route from the Red Sea (Jiddah) to Busrah, we meet first granite and trap-rock, overtopped in the Harrat el-Kisshub by lavas, and further on at Wady Gerir and Jebel Shear by basalts; at the Nefud el Kasim (Boreyda) sandstones begin until we reach the limestone region of Jebel Toweyk. Thence all is gravel and sand to the Euphrates.

Arabia has no rivers and none of its mountain streams (some of which are perennial) reach the seacoast. At least they do not arrive there by the overland route, for it is a well-established fact that the many fresh water springs found in the Bahrein archipelago have their origin in the uplands of Arabia. At Muscat, too, water is always flowing toward the sea in abundance at the depth of ten to thirty feet below the wady-bed; this supplies excellent well-water. In fact the entire region of Hasa is full of underground watercourses and perennial springs. Coast-streams are frequent in Yemen during the rain-season and often become suddenly full to overflowing dashing everything before them. They are called sayl, and well illustrate Christ’s parable of the flood which demolished the house built upon the sand.

The great wadys of Arabia are its characteristic feature, celebrated since the days of Job, the Arab. These wadys, often full to the brim in winter and black by reason of frost but entirely dried up during the heat of summer, would never be suspected of giving nourishment to even a blade of grass. They are generally dry for nine and ten months in the year, during which time water is obtained from wells sunk in the wady-bed. Wady Sirhan runs in a southeasterly direction from the Hauran highlands to the Jauf district on the edge of the great Nefud; it is fed by the smaller Wady er-Rajel. Wady Dauasir which receives the Nejran streams drains all of the Asir and southern Hejaz highlands northward to Bahr Salumeh, a small lake, the only one known in the whole peninsula. The Aftan is another important wady running from the borders of Nejd into the Persian Gulf. This wady-bed is marked on some maps as a river, flowing into the Persian Gulf apparently by two mouths. It does not exist to-day. The most important water-bed in Arabia is the celebrated Wady er-Ruma, only partly explored, which flows from Hejaz across the peninsula for nearly 800 miles in a northwesterly direction toward the Euphrates. Were there a more abundant rainfall this wady would reach the Shat-el-Arab and give unity to the now disjointed water-system of Mesopotamia and north Arabia.[1] For obvious reasons the caravan routes of Arabia generally follow the course of the wadys.

Arabia is also a land of mountains and highlands. The most clearly developed system is the extensive range skirting the Red Sea at a distance of from one to three days’ journey from the coast. South of Mecca there are peaks of over 8,000 feet; and beyond, the range broadens out to form the Yemen highlands, a corner of the peninsula worthy of its old name “Arabia Felix.” The mountains along the south coast are more irregular and disconnected until they broaden out a second time between Ras el Had and Ras Mussendum to form the highlands of Oman. Along the gulf coast there are no mountains except an occasional volcanic hill like Jebel Dokhan in Bahrein and Jebel Sanam near Zobeir.

The Nejd is crossed by several ridges of which the best known is Jebel Shammar running nearly east and west at an altitude of about 6,000 feet. Jebel Menakib, Jebel Aared, Jebel Toweyk and Jebel Athal are other ranges south of Jebel Shammar and also running in a similar direction toward the southwest and northeast. The Sinai peninsula is a rocky limestone plateau intersected by rugged gorges and highest toward the south in the region of Sinai proper.

Next to its wadys and mountains Arabia is characterized chiefly by the so-called Harrat or volcanic tracks already mentioned. These black, gloomy, barren regions occupy a much wider extent of north Arabia than is generally supposed. The largest is Harrat Khaibar, north of Medina, the old centre of the Jews in the days of Mohammed. It is over 100 miles in length and in some parts thirty miles wide. A wilderness of lava and lava-stones with many extinct crater heads, craggy, and strewn with rough blocks of basalt and other igneous rocks. In some places the lava beds are 600 feet deep. Signs of volcanic action are still seen at Khaibar, smoke issuing from crevices and steam from the summit of Jebel Ethnan. A volcanic eruption was seen at Medina as late as 1256 A.D.[2] and the hot and sulphur springs of Hasa and Hadramaut seem to indicate present volcanic action.

The sandy-tracts of the so-called Arabian deserts are termed by the Arabs themselves nefud (drained, exhausted, spent), the name given on most maps. The general physical features of this “desert” are those of a plain clothed with stunted, aromatic shrubs of many varieties, but their value as pasture is very unequal, some being excellent for camels and sheep, others absolutely worthless. Some nefuds abound in grasses and flowering plants after the early rains, and then the desert “blossoms like the rose.” Others are without rain and barren all year; they are covered with long stretches of drift-sand, carried about by the wind and tossed in billows on the weather side of the rocks and bushes.[3] Palgrave asserts that some of the nefud sands are 600 feet deep. They prevail in the vast unexplored region south of Nejd and north of Hadramaut including the so-called “Great Arabian Desert.” Absolute sterility is the dominant feature here, whereas the northern nefuds are the pasture lands for thousands of horses and sheep.