Adventures on Ice: 21 Dazzling Photos of Frozen Exploits

See winter through the eyes of these bold, cold-weather adventurers.      

While some adventurers are deterred by freezing temperatures, others take advantage of the glorious opportunities winter provides. They swim through broken ice, get up close and personal with cold-weather wildlife, snowboard down snowy peaks, and explore glistening ice caves. By trekking into frigid landscapes, these intrepid athletes get the chance to explore pristine environments—and avoid the crowds while they do it.