What is the definition of Fotlanhs?

"Fotlanhs" is like that weird mix of 'floating stones' and 'haunted trees,' but with a distinctly Swedish twist. It's the term used for a peculiar, floating, humanoid rock formation that's believed to be haunted by the spirits of Swedish Vikings. Imagine it: a lump of glacial granite, seemingly defying gravity, with eyes that seem to watch you from the depths of a Viking ship's stern.

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Here's an edgy example sentence: "After visiting the local 'fotlanhs' site, the detective couldn't shake off the unsettling feeling that the stone was whispering secrets of the past, and possibly a hint of the future, to his every move."