Looking approx north from Shapley Tor, the platform cairn is located, more or less centrally, upon the far extremity of the broad ridge. (There are also hut circles a little further north again which I did not have daylight to see). In retrospect I sussed that this is NOT the cairn depicted upon the 1:25k OS map, that being what I thought looked very much like one upon the right hand (eastern) edge! Visit both and get the pictures I neglected to take :-)