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A hole in the ground where pain lives full time. It's like the Pain Cave but way worse. You don't just feel it, you scream it.
I stepped into the pain cavern and my soul died. My feet are still bleeding.
My dentist said I was in the pain cavern for 10 minutes. That's longer than a movie.
My brother went to the pain cavern and came out crying. He now calls it his second home.