Kilclooney Dolmen, Ardara, co. Donegal, Ireland Wild Atlantic Way The Kilclooney Dolmen is an exceptionally fine portal-tome or dolmen, prominent on the skyline 6.5km north-north-west of Ardara in County Donegal. This Neolithic monument dates to between 4,000 to 3,000 B.C and is one of the finest examples in Ireland. 19/07/2023