In fact, we weren’t on a frozen lake. We were standing on the ice sheet – a much more massive entity than a frozen lake. The lake that these scientists were studying was, in fact, liquid water that had pooled on top of the ice sheet. It drained while they were in camp beside it. They think it was the weight of the water that helped pry the cracks open, and believe the water went rushing down to the very base of the ice sheet. I didn’t think any cracks were going to open up and swallow us…pretty much. It was kind of freaky though, especially when Mary and I were out there all alone.