Dún Alt Promontory Fort is situated above An Trá Bhán Beach (aka: The Silver Strand) in County Donegal (Irish: Contae Dhún na nGall) and is the remains of a stone fort constructed in around 300BC by Celts. It can be reached by going west from the town of Donegal (Irish: Dún na nGall) along the N56 and the R263 past Killbegs. The site is off the R263 at Malin Beg near Glencolmcille (Irish:Gleann Cholm Cille), in south-west County Donegal, Ireland. Promontory forts are a defensive structure. They are located above a steep cliff, with a narrow connection to the main body of land to offer maximum protection. They are mainly found in a number of the Celtic lands including Brittany, Ireland, Orkney Islands, Isle of Man and Cornwall. An Trá Bhán Beach is a beautiful location surrounded by high horseshoe-shaped cliffs.
Link and image: Stair na hÉireann | History of Ireland and image is courtesy of their website.