This is one of the most unknown gems on Loop Head. It is almost perfectly preserved, a huge size and deserves to be visited and enjoyed. It is however on private lands and permission of the owner should be sought before going on site. It is just beside the coastline with views of the sea, coastline and across the peninsula to the Shannon estuary side. It is the largest ring fort in the area and is in view of 7 smaller ones. It would have been the centre of power in the area back in the Iron Age. Its military purpose would be primarily a lookout post for invaders by sea or land and then used during an invasion as a well protected fort.