An extensive cropmark complex near Dog Mills was discovered by air photography taken in 1982-83 by Prof. B. Jones and N. Higham. At Kionlough (SC 453985) between the modern road and the sea are two complicated site nuclei with associated field systems, suggesting two periods of superimposed landscape. Elements of both landscapes can be seen to the south as buried ditch lines. 550 metres to the southwest, and to the north of Nassan (SC 447981), an elliptical multivallate site appears to be the principal feature, although another, sub-rectangular enclosure is visible, 300 metres to the northeast.