These breathtaking photographs show climbers scaling a treacherous tunnel made entirely from ice to make their way out of a cave carved in a frigid glacier. The brave explorers look as though they are on the verge of sliding down the swooping sides of the cave - a vertiginous drop of more than 20m onto jagged ice. Braving freezing temperatures and a dangerous ascent, Alexandre Buisse clung to supports screwed directly into the walls of ice to photograph his friends scaling the Mer de Glace glacier in Chamonix, France.
-Mail Online
