I mean, there's clearly a water tank there, but the amount of trails coming in there, and it's placement at the bottom of drainage from some hills makes me think it's also a salt lick. Look at all the trails leading into it. I suppose cows could do that in just a few years, but I like to imagine that it's one of those special places that people and animals have been traveling to for thousands of years: a salt lick. I guess I could go find out. It's right by Santa Fe.