The waters from the western slopes of Lyell and Maclure find their way, through many streams and many lakelets of splendid beauty, into two lakes which are the headwaters of the famous Merced River. The upper of these is Washburn Lake, cradled in bare heights and celebrated for its fishing. This is the formal source of the Merced. Several miles below, the river rests again in beautiful Merced Lake.

One of the six Yosemite High Sierra camps is at the head of Merced Lake. There is a new trail 13 miles from Yosemite Valley to Merced Lake which crosses glacier-polished slopes. It is real wilderness, famous for its good fishing and beautiful scenery.