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posa Grove of Big Trees is on the western slope, as Yosemite 

 National Park is approached. Mt. Lyell, 13,090 feet, stands at 

 the boundary of Yosemite Park. Glaciers cling to the high 

 peaks of Mokelumne Basin. These lie in amphitheaters on the 

 north slopes. Dana Glacier lies nestled on the north side of 

 Mt. Dana in a deep amphitheater. Largest and most prominent 

 on the landscape are the glaciers of Mt. Lyell and Mt. MacClure. 

 These dazzling ice bodies give the group of peaks a truly alpine 

 aspect. Down the valley of the Merced is Yosemite Valley, 

 Yosemite Camp, Bridal Veil Falls, and Yosemite Falls. To the 



Photo by Adolph Knopf, U. S. Geol. Survey 



FIG. 10. Cirques on crest of Sierra Nevada. The gathering grounds of 

 glaciers. At head of South Fork of Bishop Creek. 



north is the Cathedral Range and Cathedral Peak. Tuolumne 

 River is fed by streams from canyons that flank the crest of the 

 great Sierra Range. Tuolumne Meadows and Hetch Hetchy 

 Valley are below. The Tioga Road leads via Tioga Pass across 

 the high range to Mono Lake. North of this is Sonora Pass, via 

 the Devil's Gate. Mono Lake is a desert lake in the Great Basin 

 east of the Sierras. On the (western) slopes of the Stanislaus 

 is the Calaveras Grove of Big Trees. Alpine County is on the 

 crest of the Sierra Range. Mountain torrents rush down to feed 

 the Stanislaus, the Mokelumne, and the American rivers. The 

 steep eastern slope of the range is drained to Carson River, which 



