Inside the black box is what I was talking about (the triangle and the circle). This is near Brunkow Cabin by Tombstone, in fact, it is the road leading into where the ruins used to be. It's not a clearing, like a road or anything. My husband tried to get to it, but no luck. The road says authorized personel only.
The circle that you speak of looks very much like the ones that go around oil pumps for maintenance peresonel and the triangle looks considerably greener than the surrounding land so it may be a low spot in the land that hold more water than the rest.