An irregular shaped pen, 2 m by 1.3 m in size, created by building rough dry stone walls in between some upright natural boulders. A large slab placed on top of the boulders creates a roofed area across one end of the pen. The walls are 1.7 m thick and 0.9 m high, with the total height of the structure at the roofed end being 1.3 m. Methodology: 30 m transect survey. Positional accuracy: less than 10 m. Tolerance of accuracy: +/- 5m. K. Laws, EAS Ltd, 27/11/2007.