High Lane (2011)

Seasoned outdoorsman Fred (Nicolas Giraud) leads his girlfriend, Karine (Maud Wyler), and three other vacationing acquaintances up a treacherous mountain trail in Eastern Europe. They face both natural perils -- a flimsy bridge over a plunging ravine -- and human ones: A woman in the group is accompanied by both her current and former boyfriends. But as their numbers dwindle, the group realizes it faces an even greater danger -- someone else on the mountain who does not like interlopers.