Or deer watering hole?
Every time I drive through this little spring-made pond in the middle of the road, a bunch of deer run off into the trees, usually before I get anywhere near them. It turns out that not only is the spring a watering hole - for various animals including birds - it's a morning-time deer bedding spot. The deer bed down in the moist to wet tall grasses on the side of the road, staying cool as well as hidden.
Squirrel-tail grass, wild rye, and thistle growing at the spring on the side of the road.