Winter in Alaska has waterfalls frozen mid-cascade, ice caves so blue they look unreal, and lakes so clear you can skate ...

Glaciers create some of the most stunning ice formations, with arches and tunnels that seem straight out of a storybook. One ...

She tracked down the photographer, who willingly shared details of the location, and for two days last spring we ventured into the Mendenhall ... a few steps into the ice cave our eyes adjusted ...

Ice Caves, Mendenhall Glacier There are few locations where you can encounter every stage of the water cycle at the same time ...

Some of the most amazing spectacles around the world are hidden deep underground, beneath rocks, sea and even ice.