An ice cave at the base of the Johns Hopkins Glacier in Glacier Bay, Alaska.
The Johns Hopkins Glacier is up an inlet off the main fjord in Glacer Bay in Alaska. It is a large, very active, glacier about a mile wide and 250 feet hight with a lot of calving activity. As a result, boats have to stay about 2 miles from the face of the glacier. Due to all the calving the face of the Johns Hopkins Glacier is full of interesting shapes and floating icebergs. I made this image of an ice cave in back of recently calved icebers, with cracking walls, at the base of the glacier that appears about to get much larger.