What you're looking at, right here, is old ice skates in a tree. Rub your eyes and look at it again, and think to yourself like the rest of us, "whu-?". Trees are incredibly resilient, even despite all the crap that us humans do to them, and it's not too uncommon for trees to grow around man-made objects. But ice skates?
That's not even mentioning the fact that those skate blades are halfway up the tree. They would literally have to have been there for a decade, if not more, before the tree could consume them like that and lift them that high. Someone would have to be either really, really forgetful, or else they just didn't want them anymore. There are easier ways to say you don't like skating, you know.