The Snake River Canyon, to be precise. ....in this little rocket contraption. I watched it live (sometime in the late 70's), probably on The Wide World of Sports or something.
The dude didn't even make it to the water's edge.
My hero Johnny Carson milked Even Knievel's famous failed 'Snake River Canyon' jump in his monologue for at least 15 years! Haha!
Johnny: "Henry Kissenger's mouth is so big...."
Audience: "How big is it???"
Johnny: "It is so big, that Evel Knievel decided against trying to jump it in his rocket powered motorcycle. That is BIG!"
I miss Johnny, by the way!