|Yeah, this looks perfectly safe.|
Though nobody died in the video you'll see below, some people have decided that skateboarding high up on rooftops is a really cool idea.
Don't try this at home, kiddies!
Some idiot will see this video and try it anyway, then tumble off a roof and kill him or her self, but that's why we have the Darwin Awards, right?
Stay safe, and live dangerously, vicariously, by watching the video. Your health insurer will thank you if you do it that way.