The Hourglass

"I'm going to pass out and drop down into the chasm that I can't see the bottom of," he says. "The whole thing put me off caving for a long time afterward." The cave ceiling was wide, it narrowed greatly near my chest, wide by my hips and then narrow by my feet. He ended up just using his feet against the wall method to scoot his way forward until he got to where the floor came back up.