I once found a area full of bones from deer and elk! I was walking around in the area and heard a elk calf calling. Turned out to be a mountain lion teaching his young kit to hunt. It was a mountain lions killing ground or bone yard. That looks like what that is.
I have a sister that lives about ten minutes from the Ruidoso Downs. Called her and she said it was pretty bad. My nephew is with the hotshot crew down there and said they could not get a handle on it until the winds calm down.