The site was defended, probably in the Norse period, on the north by a wall having a gate and sallyport, and on the south and west by a ditch and rampart with dry-built stone revetment and entrance. A rough slate cross-slab from an earlier grave had been re-used in this revetment. A long rectangular building at the northwest corner of the site and the extensive stone pavements found towards the central and east parts were apparently constructed about the same time.