The Grand Canyon in Arizona may be immense, boasting nearly 277 river miles in length, but for sheer depth, Hells Canyon in eastern Oregon, eastern Washington and western Idaho wins hands-down. The deepest canyon in North America, at its deepest, it plunges 8,043 feet from the tip of He Devil Peak to the Snake River, which flows more than 1.6 km below the canyon’s west rim on the Oregon side and 2,300 m below the peaks of Idaho’s Seven Devils Mountains range to the east.
