 There was about eight to ten bolts, concrete, you know, that were drilled into the concrete. And then the structure was, it was a wood frame with a reflective material. I'm not sure exactly what the material was. It's about four to eight feet tall and about four inches thick. And what's really cool is when you see it from the road, you're not supposed to trespass because it's private property. When you see it from the road, it just looks like kind of a wall of water.