Down the hobbit hole
“In a hole in the ground there lived a Hobbit,” to quote a passage from the chapter “An Unexpected Party” in J.R.R Tolkien’s The Hobbit. “Not a nasty, dirty, wet hole, filled with the ends of worms and an oozy smell, nor yet a dry, bare, sandy hole with nothing in it to sit on or to eat: It was a Hobbit-hole, and that meant comfort.”