in hawaii, step out on to this slackline and make it look super easy. and beautiful. >> i don't know that i have any real desire to do this. >> you don't want to spend the time to learn. it would be cool to go wee. >> that's a great place to go and do it. it gives you an idea of what they have to do to get it set up. >> they show you everything that it takes, the little details that make slacklining over some of these gorgeous locations possible. but not just that. i do love that they show us some fails. because oftentimes we only see the successful walks across the line. in this one we see some of the guys falling right over the line. >> it's still super cool it took them a long time to actually make this happen. over the course of two days they were able to capture this super-cool video. >> now from slacklining to rock climbing, this guy's got some moves. >> this is twerk climbing? what's going on here? >> just trying to shake some rocks loose? >> no, his gear is stuck so he's trying to pull the gear out of the wall. >> well, that's exactly what he's