Rotting ice and melting snow, but fast, easy, fun. Grab a few more small firewood logs before breakup.
A seal "cylinder." (Notice the perfectly cross-hatched lines made by the seal's claws - kind of hard to see, I know.)
Ice and snow, wind and water, do some rather interesting things sometimes. T'would be hard for a human to engineer some of them!
Wind pressure on sheet ice does amazing things. These piles are adjacent to flat sheets of 60, 80, ...mph ice.......for miles. Nice cruising. Got Sunscreen?