This locus is the capstones, 2 large and one long, in the center/SW of the central ring of the cromlech. One huge, squarish, about 2m x 3m. The smaller in the NE is about 1.25m x 1.5m. The long stone in the SE is about 0.30m x 1.5m. All three seem to be basalt.Elevations from E:S (lrg capstone) -64cm.E (smaller capstone) -90cm.N (lrg capstone) -115cm.W (lrg capstone) -114cm.C (lrg capstone) -90cm.long skinny capstone in SE : -66cm.Earth just south of the abive and E of the lrg capstone -105cm.