Concrete block, #9 fence wire around the spine. Concrete block not heydite. (lightweight).It was a feeding frenzy. They were dragging it off of the camera to the right and then it got drug all the way across and off to the left. By the end of the night when they finally moved on at 7:30 a.m., there was just the rib cage and the hide left behind directly in front of the camera.