Amazing footage of a wing-suit pilot flying past a man highlining across a ravine in the Dolomites in the Italian Alps.

Writes the filmer: "Highlining is pretty scary stuff, so when you're perched hundreds of feet above a ravine in the Dolomites you need 100 percent focus and complete concentration. What you don't need is for one of you friends to wing suit through the narrow gap under you! Don't look down!