Early monastic site with the remains of a church (principally late medieval), a high cross (reputedly brought from nearby Baltray), and round tower. The round tower is unusually short. In 1840 it is recorded that a cabin was built up against it and a door knocked into it and used as a dwelling place, this door was blocked up in 1840. In 1879 the Board of Works carried out repairs to the roof of the tower.

The first presiding abbot was Lugaidh, son of Aengus, king of Munster who died c.515. The next recorded abbot was St. Ronan who died in 664. His relics were placed in a costly shrine in 801. A fire in the refectory is recorded in 912. Congalach, son of Gairbidh, king of Conailli was slain by his own people in 913, in the refectory of the monastery, after he destroyed the abbot’s house at Dromiskin. The subsequent history of the monastery does not appear in any of the annals.

Portals of more than one sculpted order are unusual in Irish Round towers, the only other surviving comparisons are to be found at Kildare and Timahoe.