What was the fictional story involving a person falling asleep and winding up with tree roots curled all around them?
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Another “long sleep” story comes to mind as well: Rip Van Winkle
https://duckduckgo.com/?q=Rip+Van+Winkle&bext=safari&ia=web
I have a suspicion that Washington Irving used some of the older folk tales to write his story. The summary of it in Wikipedia does not cite tree roots curled around him.