Boa Island (from Irish Badhbha)[1][2] is an island near the north shore of Lower Lough Erne in County Fermanagh, Northern Ireland.[3] It is 16 miles (26 km) from Enniskillen town.[4] It is the largest island in Lough Erne,[5] approximately 5 miles (8.0 km) long,[6] and relatively narrow. The A47 road goes through the length of the island and joins each end of the island to the mainland by bridges leading west toward Castle Caldwell and east toward Kesh.[7]
Boa Island features a counterscarp rath (grid ref: H0744 6250) as well as carved stones, graveyard and enclosure (grid ref: H0852 6197), all in Dreenan townland and all Scheduled Historic Monuments.[8] The Lustymore stone figure was moved here in 1939 from the nearby island of the same name. The oldest stone monument on the island is a denuded cairn at Inishkeeragh Bridge near the southern tip of the island.[4]