There is a cromlech in Byrne's field on Fieldstown Hill. The field is called Lios Dubh. Fionn Mac Cumhaill is supposed to be buried there. The cromlech is on the top of the hill. There are some stones standing upright in the ground and a large flat stone on the top of them. The stones are almost covered with clay and the place is overgrown with briars. Within the grave are bones.