Downhill from Mavor and Dix's "central mound"

I mentioned here that there were other large rock piles in addition to the one described in M&D and also within the innermost area surround by stone walls. Downhill nearer to a in their diagram was this smaler mound:Then a sort of gateway between rocks, filled with cobbles:Note the large triangular rock in the background. Here it is closer up: It is surrounded by still more cobbles and just beyond is where two stone walls meet in an acute angle at a.