We have the worst dock damage in 61 years on the Lake. There was a large pressure ridge that ran from our dock and zig-zagged northwest over to Black Island -- and I think this had something to do with it. End result, the top of the crib was pushed in and that side of the dock lifted -- actually bending the frame of the boathouse. You can see how the doorway is offset in this photo:
Detail:
And the offending ridge:
