A raised, rectilinear, stone platform measuring 5.5m north northeast- south southwest by 3.25m. It was grassed over when recorded in September 2007 but was probably a machinery or building base connected with the construction of the reservoir. 7m to the northeast were two steel girders, angled into the ground pointing in the direction of the structure, and 6m to the south southwest of the structure was a small concrete pad. Both of these features were thought to be connected with the structure. J.J.Hall, Trysor, 27 September 2007