Silverthorne, UNITED STATES
Clipper Williams, from Denver, Colorado looks at ice formations at the Ice Castles at Silverthorne in...
Clipper Williams, from Denver, Colorado looks at ice formations at the Ice Castles at Silverthorne in Colorado January 3, 2012.
The Ice Castles at Silverthorne consists of man-made walkways, tunnels, and arches of ice with no supporting structures, some reaching up to a height of 30 to 40 feet (9 to 12 metres). These formations are illuminated at night by 200 compact florescent lights. REUTERS/Nathan W. Armes (UNITED STATES - Tags: SOCIETY TRAVEL)