Tahoe-Yosemite Trail Yosemite National Park. The TYT crosses paved roads at or near Echo Summit, Carson Pass, Ebbetts Pass, and Sonora Pass, which facilitates resupplying for thru hikers and provides trail access for section hikers. Tahoe-Yosemite Trail The Tahoe-Yosemite Trail (TYT) is a long-distance trail in the Sierra Nevada mountain range of California. The trail courses from Meeks Bay at Lake Tahoe to Tuolumne Meadows in Yosemite National Park. The trail is a foot and equestrian path that passes through the Desolation, Mokelumne, Carson-Iceberg, Emigrant, and Yosemite Wilderness Areas and the Meiss Country (Dardanelles) Roadless Area. The United States Forest Service had
Yosemite National Park Starting 20 million years ago (in the Cenozoic) and lasting until 5 million years ago, a now-extinct extension of Cascade Range volcanoes erupted, bringing large amounts of igneous material in the area. These igneous deposits blanketed the region north of the Yosemite region. Volcanic activity persisted past 5 million years BP east of the current park borders in the Mono Lake and Long Valley areas. Starting 10 million years ago, vertical movement along the Sierra fault started to uplift the Sierra Nevada. Subsequent tilting of the Sierra block and the resulting accelerated uplift of the Sierra Nevada increased the gradient