This site generates income via partnerships with carefully selected travel brands and/ or purchases made through links to them. As an Amazon Associate I earn from qualifying purchases. See why this is important.Carrowmore Megalithic Cemetery in County Sligo is one of the most densely populated complexes of megalithic tombs in Ireland. In the distance is Knocknarea and on top of that is Queen Maeve's Tomb, barely visible in this photo. Learn more about Carrowmore, Knocknarea, and other activities in County Sligo.