Mt. Everest is not the hardest mountain to climb — here's what makes K2 so much worse. | Insider Science

390K views · 4K reactions | #Petzltips - Rappelling with a single rope and a pull cord. For long, difficult routes, it’s common to use a single rope along with a pull cord to haul a bag and to retrieve your rope when rappelling. In this Petzl tips, we show you an example of how to set up a rappel on a VOLTA single rope with a stopper knot at the anchor + a PUR LINE pull cord to retrieve the rope on the descent. #petzl #climbing #accesstheinaccessible | Petzl | Facebook