Photos courtesy of Gerry Bracken
Westport -

The complex is centred around this large circular mound, which is 88m in diameter on average at its base, and is about 4m in height on its northern side. There has been much speculation over the years as to its function, but recent research by NUI Galway indicates that it was used for ceremonial purposes, and possibly contains a passage tomb. Through techniques such as ground probing radar and magnetic susceptibility, the Archaeogeophysics Imaging Project of NUI Galway, under Professor John Waddell have discovered a massive enclosure surrounding the mound, approx. 380m in diameter, the largest of its type in the country. It also encloses a number of other archaeological features near the mound.

Located opposite Rathcroghan school, this raised ringfort has also been the subject of the recent Archaeogeophysical survey, and was a high-status residential site.

Ráth na dTarbh. The name of this site comes from the Táin, as it is held to be the place where the brown bull of Cooley, and the white horned bull of Connaught did battle.

Relig na Rí, Known as the burial ground of the kings, is a large enclosure in the townland of Glenballythomas. Nearby stands Dathí 's Stone, where the last pagan king of Ireland is reputedly buried.