Slacklining at high altitudes is called skylining. I don’t think I want to try it, ever! [Sebastien Monraz-Rosset](http://www.sebmontaz.com/) and his team called the Skyliners didn’t make it this time but they sure did entertain everyone…
Watch These Daredevils Try To Slackline At 10,000 Feet… And Fail?!
February 8, 2016