This ice cave is one that we were a bit afraid of. We looked at it our first day on Valdez Glacier Lake, but we were not brave enough to enter it. On the second day, we were more confident. We had been encouraged to explore this cave by two more kayak tour guides we met on the lake. One guide said, "It looks kind of sketchy, but it is perfectly safe and really exciting to explore." So, we gathered up our courage and paddled in. Joe took a video with his smart phone, while I paddled.
Here is the Youtube video I uploaded from our visit to this ice cave on the Valdez Glacier: