What is "carnfree"

Carnfree (Irish Carn Fraoich, Fráech's cairn) is a site south of the village of Tulsk in Roscommon that also lies close to the more celebrated ancient landscape of Rathcroghan. The chief feature here is the bronze-age mound of Carnfree itself, believed to be the cairn of the Connacht warrior Fráech, that was used as an inauguration place up to late medieval times. It also encompasses an area known as Selc featuring Duma Selga (The mound of Selc) and the ecclesiastical site where St. Patrick baptised the Ui Brian princes of Connacht, who according to the saint's biography may have resided in or administrated from this area.