***Playas are ephemeral lakes that form when rainwater fills natural clay depressions in the landscape.***
Most likely old buffalo wallows. And if T. Boone Pickens keeps selling his water rights to big Texas cities the aquifer may bet much lower.
Yep, he needs to go the way of former massive buffalo herds. He just seems so scummy to me and gives me the impression he would sell his own mother if he could make a buck.