"I read about this one on a forum. I think it's true. The GPS point is the location of the German battleship, Tirpitz when it was sunk by British bombers on 11/12/1944. The Tirpitz was the sister ship of the famous Bismarck. It was also the last serious German surface naval threat. The RAF and Royal Navy played a long cat and mouse game with the Tirpitz as it hid out in Norwegian fjords. It was eventually located and Lancaster bombers attached at high altitude with huge bombs. The 3 round holes (2 in the water, 1 on land) are likely craters from missed bombs. They don't make sense geologically"