Lyell Canyon is a sub-alpine meadow in Yosemite National Park south of Tuolumne Meadows. For 13 kilometers (8 statute miles) most of the canyon has an approximate elevation of 2 700 meters (8,850 feet), and then rapidly climbs to 3 370 meters (11,056 feet) to Donohue Pass, below Donohue Peak - which marks the eastern boundary of Yosemite. The valley at the base is relatively flat and wide, following the Lyell Fork of the Tuolumne River through an open meadow and wooded areas. The Lyell Fork eventually meets with Tuolumne River.