This is a picture of a marker. I’m not sure if it is a 3 Corners (Iowa, Minnesota, South Dakota) or 4 corners (+ Nebraska). I had a lot of Gold Margarita’s that day. The marker is funny though because it used to be in the middle of the road, and a lot of people hit it with their cars, so it’s welded in several places. I think the the numbers on it are the long/latitude? Next time I need to research before I post!