Originally Posted By: Arney

Actually, come to think of it, I don't think I've ever read or watched any serious warning about an empty Ogallala ever caving in, though. Maybe it's not really geologically feasible?


I'm no geologist, but when it comes to aquifers, I understand it makes more sense to think of a water saturated gravel bed, and not a vast underground cavern that fill with water, and whose emptiness might make it subject to collapse. Gravel beds can only settle so far when the water comes out of them, how far, well you need to ask a geologist.