Dunbeg Fort is a component part of the Fahan group of Beehive huts. This small but impressive fort is located on a sheer cliff promontory which projects south into Dingle Bay at the base of Mount Eagle. The defences consist of four lines of banks, five fosses and an inner drystore rampant with a complex entrance flanked by two guardchambers. A souterrain extends under the causeway from this entrance and in the interior is a single beehive. The fort dates back to 500 BC.