Marshall Miller went out to visit his friends in Moab, Utah, and while he was there, he got talked into BASE jumping. Into a canyon. From a zipline.

Of course, the revolution in badass insanery will absolutely be televised thanks to GoPro — he made sure he strapped on two cameras, one on his head and the other down near his waist, so that the less brave of us watching from home could see both what he was doing and his reaction to it. His reaction is about what you’d expect: “That was so scary!”

Miller is clearly a master of understatement, because it looks absolutely terrifying. Kudos to him and his balls of steel.