Frozen Sea Caves, Apostle Islands National Lakeshore
Ice-covered sandstone cliffs at the Apostle Islands National Lakeshore mainland sea caves on Lake Superior.
Ice formations coat sandstone cliffs at the mainland sea caves of Apostle Islands National Lakeshore on Lake Superior. The caves, located along the shoreline near Bayfield, Wisconsin, are accessible on foot when lake ice is thick enough to support visitors.
Photo taken in February 2014.
