Parque Nacional de Connemara

Diamond Hill (Irish: Binn Ghuaire, meaning "Guaire's peak") at only 442 metres (1,450 ft), does not rank as an Arderin, or a Vandeleur-Lynam; however, it has the prominence to rank as a Marilyn. Diamond Hill is an isolated peak, situated beside the village of Letterfrack, in the northwest corner of the Twelve Bens in the Connemara National Park in Galway, Ireland.