These images show the widest section of rock wall observed in the corral complex. The top photo (a) is looking west along the top of Rock Wall D1, with a 1-m scale (39 inches) lying on top of the wall. Rock Wall E1 runs perpendicular in the background. The bottom photo (b) is looking northwest at Rock Wall D1. The cross-section shows a section of Rock Wall D1 that was about 6 ft wide.