Remember when B.A.S.E. jumping seemed crazy? Compared with flying a wingsuit, simply jumping off cliffs with a parachute is like a gentle ride down an Otis elevator. Check out this amazing video of wingsuit-flying wingnuts jumping off the north face of the Eiger and other huge European cliffs. (One of these wingnuts is an old friend, the climber and SuperTopo magnate Chris McNamara.) Amazing to see how much forward distance they cover, how close they fly along the walls, and how late they wait to pop the chute. A good pilot can fly 90 to 120 mph and achieve a glide ratio of 2.5 to 1—that means flying about 3 miles straight ahead in a jump off the Eiger. Jeezum crowbar! This has gotta be one of the wildest videos I've ever seen—maybe it's old hat if you've seen a lot of this stuff, but to me it was a real mind-bender.