Ice caves on Apostle Islands, Bayfield, Wisconsin, USA

Ice caves on Apostle Islands, Bayfield, Wisconsin, USA

The Apostle Islands National Lakeshore is a U.S. national lakeshore consisting of 21 islands (Apostle Islands) and shoreline encompassing 69,372 acres (28,074 ha) on the northern tip of Wisconsin on the shore of Lake Superior. It is known for its collection of historic lighthouses, sandstone sea caves, a few old growth remnant forests, and natural animal habitats.

Source: Bob Israel @ flickr.comwikipedia.org