A rare look inside Apostle Islands ice caves
Monday, February 17, 2014 - 13:30
in Earth & Climate
Weeks of frigid temperatures have given sightseers rare access to a spectacular network of frozen caves on the Apostle Islands National Lakeshore, near Cornucopia, Wis. The ice around the caves is thick enough to walk on for the first time since 2009, according to the U.S. atmospheric agency.
