Glass cage hangs over the edge of 4km-high mountain in French Alps
Glass box lookout in the French Alps. Located atop the Aiguille du Midi, altitude 3842 meters, in the Mont Blanc Massif range. Accessible by the Aiguille du Midi cable car, a 20-minute journey from Chamonix.
Chamonix Skywalk, France - National Geographic Travel Daily Photo
Chamonix Skywalk, France: A journalist, wearing slippers to protect the glass floor, stands in the just opened "Step Into the Void" installation at the Aiguille du Midi mountain peak above Chamonix, in the French Alps. The Chamonix Skywalk is a five-sided glass structure installed on the top terrace of the peak with a 3,280-foot drop below. Photograph by Robert Pratta, Reuters December 26, 2013