Before the ice melts, let's take time to celebrate one of winter's great gifts: the sea caves at Apostle Islands National Lakeshore.
Eighteen miles west of Bayfield, Wisconsin is where you can find the island chain in Lake Superior. The islands and the ice have created a breathtaking natural art gallery.
The ice caves on the Apostle Islands have been a huge draw for tourists.
USA Today produced this video on the Apostle Island Sea Caves:
And you can see more photos of the ice caves in this photostream: