 Upon Listooder lies an old fort (hence lios) which sits on one of County Downs' highest drumlin hills.It was used as a look-out because of its vast 360° view across the Down Drumlins as far as the Mourne Mountains and down onto Listooder Hamlet which would have only held a farm then.Less than half a mile outside Listooder, on the border of the two townlands of Listooder and Clontaghnaglar, in a field along Abbeyview Road sits a gravestone with a cross engraved on it surrounded by a stone wall with a sycamore and beech tree.