Tenaya Canyon

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Looking up Tenaya Canyon from the top of Half Dome

Tenaya Canyon is a dramatic and dangerous canyon in Yosemite National Park, California, USA, that runs from the outlet of Tenaya Lake 10 miles down to Yosemite Valley, carrying water in Tenaya Creek through a series of spectacular cascades and pools and thence into a deep canyon below Cloud's Rest, a giant granite mountain adjacent to Half Dome.

The top of the canyon can be seen from the Highway 120, or Tioga Road (which goes to Tuolumne Meadows and Tioga Pass). From this roadside view area, Cloud's Rest and Yosemite's signature Half Dome dominate the canyon. At the bottom of the canyon, in Yosemite Valley, lies Mirror Lake accessible by shuttle bus and a short walk.

The canyon has no foot trail and is notoriously difficult to navigate, particularly in spring and summer when water levels are high. Signs warn against hiking in the canyon, and the National Park Service's maps of Yosemite "strongly discourage" it. The American Canyoneering Association gives Tenaya Canyon a rating of 3B V. The 3 is an "intermediate" rating on a scale of 1 to 4, with 4 most difficult; B is a measure of water volume on a scale of A to C; and the V indicates that the trip will take one and a half days.

The canyon has achieved notoriety because of a curse Chief Tenaya reportedly invoked in the 1850s as a result of the death of his son at the hands of a battalion intending to deport the natives of Yosemite Valley. Those who believe in the curse cite accidents, mysterious deaths, and disappearances there. Some park rangers have reportedly refer to Tenaya Canyon as the Bermuda Triangle of Yosemite.^[1] Hiking the canyon involves dangerous exposure to heights and, if there is water in Tenaya Creek, dangerous waterfalls and cascades. Wet and slippery glacially polished granite adds to the likelihood of falling.