A hiker looks out at the Pyrenees mountains from the top of Col Peyreget while hiking the GR10 trekking trail, Pyrenees Atlantiques, France, Europe

Taking in the view of Midi d'Ossau beyond Lac Gentau beside the GR10 trekking route in the French Pyrenees, Pyrenees Atlantiques, France, Europe

Camped beside Lac Gentau with views of Pic du Midi d'Ossau on the GR10 trekking route in the French Pyrenees, Pyrenees Atlantiques, France, Europe

Walkers descend from the top of Col d'Ayous on the GR10 trekking route in the French Pyrenees, Pyrenees Atlantiques, France, Europe

A hiker watches the sunset on the Pyrenees and a cloud inversion near Refuge Pombie along the GR10 trekking route, Pyrenees Atlantiques, France, Europe

Walkers descend from the top of Pic Peyreget while hiking the GR10 trekking trail, Pyrenees Atlantiques, France, Europe

Walkers admire the view of Pic du Midi d'Ossau from the top of Col d'Ayous on the GR10 trekking route, Pyrenees Atlantiques, France, Europe

Walkers descend from the top of Pic Peyreget while hiking the GR10 trekking trail, Pyrenees Atlantiques, France, Europe

Lac du Miey and Pic Midi d'Ossau seen from the GR10 hiking trail in the French Pyrenees, Pyrenees Atlantiques, France, Europe