Mendenhall Ice Caves JUNEAU, ALASKA The Mendenhall Glacier is a 12-mile-long glacier in the Mendenhall Valley, located only 12 miles from downtown Juneau in Southeast Alaska. Federally protected as part of the Mendenhall Glacier Recreation Area, a unit of the Tongass National Forest, the glacier originally had two names, Sitaantaagu (“Glacier Behind the Town”) and…