Boyne, River

Irish �An Bh�inn� river rising in the Bog of Allen, County Kildare, Ireland, and flowing 70 miles (110 km) northeast to enter the Irish Sea just below Drogheda. Neolithic passage graves at Knowth, Newgrange, and Dowth are of archaeological significance, and nearby in the Boyne valley is Tara, seat of the high kings of Ireland. The river was the scene of the famous Battle of the Boyne (1690).