Rincewind successfully pulls himself entirely onto the lid and pulls his knees in. He's just going to sit huddled here for a bit.

"How should I know? It's not like I jumped in or anything. S'far as I can tell, we're at the bottom of a hole in the middle of a cave, it's dark, and we're not gettin' out. I think, if you have any prayers, now's the time to say them." He's only half-joking.