Mike, First I want to let you know how wonderful your journal posts are! I suspect you already do know, but keep up the great job, I am thoroughly enjoying reading these. I saw the entrance hole that you and the other divers use and thought you must feel like a seal hopping in there. The big question I have is how do you keep from getting turned around under the ice? How easy is it to get lost? I imagine there are guide ropes or some such in place, but I would love to see what it looks like under the ice as you swim back. Keep warm and safe - Susan Summers Virginia Living Museum