National Geographic : 1913 Aug
Photo by G. P . Abraham A CREVASSE ON TIlE WAY UP MLUNT BLANC "The yawning chasms are generally crossed by snow bridges which have drifted across them. If the snow bridge is too frail to allow the weight of a man upright, one of the guides often lies down at full length-of course tied to the rest of the party-and manages to wriggle across, and then pulls the next one over laid flat on his back. . . . As a last resort, steps are hewn in the faces of the crevasse, down on one side and up the other, descending as far as necessary in order to cross the chasm easily" (see page 885).