A story from Germany!

On the Island of Rügen, in a thick forest, there is a deep lake. It is rich with fish, but its water is cloudy, and one cannot fish there. Nonetheless, many long years ago a number of fishermen attempted to do so, and brought their boat to the lake. The next day they returned home for their nets, and when they came back, their boat had disappeared. Then one of the fishermen looked around and discovered the vessel stuck in the top of a tall beech tree.
He cried out: "Who in the devil put my boat up the tree?"

They saw no one, but a voice from nearby answered, saying, "The devils did not do it. I did it together with my brother Nickel!"