Glacial till deposited during the last ice age is widely spread over the High Sierra of Yosemite up to elevations of 4000 m. This tarn, a glacial cirque lake, is located in a perfectly trough-shaped valley that formed 15.000 years ago. Only the highest peaks projected as nunataks through the ice cap during the ice-age. Therefore, today's landscape is dominated by the former erosive forces of the ice-age. This results in the gentle fabulous structures. Only few summits still show rugged horn features.
Canon 20D, EF-S 10-22mm, f/22, 1/10sec, ISO 100, polarization filter, tripod