The lake appears to have glaciers in the neighborhood. Could it be that the skeletons belong to people who died on a glacier and were deposited near the lake during subsequent expansion & contraction periods?
My understanding is that ante mortem and post mortem fractures can be distinguished by bone marrow oedema. Presumably, if the post is an extremely long period and there's no bone marrow present, then there would be other substantially different fracture patterns.
Otzi wasn't overly crushed. https://en.wikipedia.org/wiki/Ötzi#/media/File:OetzitheIcema...
I imagine it'd depend on the glacier, but yeah.
> While archaeobotanist Klaus Oeggl of the University of Innsbruck agrees that the natural process described probably caused the body to move from the ridge that includes the stone formation, he pointed out that the paper provided no compelling evidence to demonstrate that the scattered stones constituted a burial platform