Spring in Hells Canyon is the prettiest, with green hills and cliffsides, moderate water levels on the Snake River, and warm ...

One of his most audacious attempted stunts came in 1974 when he tried to clear Idaho's Snake River Canyon in a rocket. The feat famously went awry when the parachute opened too early.

Some jumps eluded success even for Knievel, though. With the 40th anniversary of the legend's failed launch across the Snake River Canyon in Idaho quickly approaching, one team with clear ...