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.Caldragh Graveyard on Boa Island in Lough Erne has graves dating back to pre-Christian Ireland (400-800AD). This broken stone is quite a bit more recent, beautifullt carved with oak leaves, shamrocks, and a radiant crowned heart. Boa Island is just one of the Treasures of Lower Lough Erne. Ireland vacation | Ireland travel tips