The dolmen at Kilclooney in County Donegal, which dates from circa. 3500 BC, is a very fine example of a dolmen, or portal tomb and is thought to be one of the best, if not the best, in Ireland. (A dolment, also called a portal tomb megalithic buriel chamber). The Kilclooney dolmen sits on a small hill about 4 miles north north west of Ardara. Take the R261 out of Ardara heading for Portnoo and Narin. After about 5 km/ miles you will come to a bend in the road where the road turns down to Narin and Portnoo. At this bend you will see a church on your right (St. Conal's) and the Dolmen Centre facing you.