Lake Superior’s Mainland Ice Caves: Sandstone and Winter Formations
White icicles follow the curves of orange sandstone, turning a rock ceiling into a delicate-looking canopy. Along the Lake Superior shore o...
apostle islands
Apostle Islands Ice Caves: Brian Peterson’s 2014 Photo Gallery
The Apostle Islands shoreline caves became a remarkable winter destination in 2014, with dense icicles transforming the rock openings. Peop...