This is a very scary webpage

[cheezz]

I don't know about enlightenment, but I can offer this. If there was air movement denoting another entrance, then perhaps that entrance was being used by a bear. Last I checked, bears can make a lot of racket, move rocks, paw at a rope, and even smell like death, since many predators love to roll in a rotten corpse to disguise their scent. The guy may be a good storyteller, but he's a better construction worker, as in building mountains out of molehills.