The Gaulstown Portal Tomb is one of the finest dolmens in Ireland and was probably erected between 4000 – 3500b.c. It’s name is derived from the name of the townland and is situated at the foot of “Cnoc an Chaillighe” or “The Hill of the Hag”.  It’s east facing portal stones are an impressive 8 feet high and the capstone is 14 feet long possibly weighing 40 tonnes. It is likely that the structure was once enclosed by a mound or cairn, which has since been removed or eroded away.