In this photo taken on Tuesday, Dec. 17, 2013, Mathieu Dechavanne, head of the Compagnie du Mont Blanc which runs the new attraction, enters a glass cage named ‘Pas dans le Vide’ (Step into the Void) at the top of the Aiguille du Midi peak (3842-meters high or 12,604 feet), in the French Alps, during a press visit. Visitors can enjoy the view of Mont Blanc, Europe’s highest mountain, from the platform. The attraction opens Saturday. (AP Photo/Alexis Moro)