Snake River Canyon, Natural canyon in Twin Falls County, Idaho

Snake River Canyon is a chasm up to 500 feet deep and 0.25 miles wide, cut by the Snake River through tan and buff layered rock in southern Idaho. It runs just over 50 miles between Twin Falls County and Jerome County. The Perrine Bridge crosses immediately north of Twin Falls, and Shoshone Falls lies about 5 miles east of the bridge. A low bridge spans the green water in the canyon's upper section.

Geologists once attributed the canyon's origin to a cataclysmic flood from Lake Bonneville about 15,000 years ago, but by 2000 they held that the flood shaped a channel whose basic structure predated it. In the late 19th century I. B. Perrine and others founded the Magic Valley's first successful farms on the canyon floor; irrigation projects of the early 20th century made farming practical above the rim and reduced the floor's agricultural value.

The canyon takes its name from the Snake River, not from the Shoshone people. Shoshone Falls, about 5 miles east of Perrine Bridge, carries that name. The canyon floor, once farmed by I. B. Perrine and others in the late 19th century, now holds parks and golf courses. The dirt ramp for Evel Knievel's 1974 jump remains on the south rim.

Perrine Bridge crosses the canyon immediately north of Twin Falls, and Hansen Bridge crosses it east of the city; Shoshone Falls lies about 5 miles east of Perrine Bridge along the canyon. The canyon runs just over 50 miles, up to 500 feet deep and 0.25 miles wide, forming part of the boundary between Twin Falls County and Jerome County.

The dirt ramp built for Evel Knievel's unsuccessful 1974 rocket jump across the canyon still stands on the south rim, about half a mile east-southeast of Shoshone Falls, and remains a tourist attraction. On September 16, 2016, stuntman Eddie Braun completed the jump using technology similar to Knievel's.