Romano British or Iron Age fogou.
Grid Reference, SW 4023 2885.
For further information see Historic Environment Record, https://www.heritagegateway.org.uk/Gateway/Results_Single.aspx?uid=MCO6862&resourceID=1020
Interior view of Bosalva Mill at Lamorna. Part of the ancient Manor of Kemyel, it has been and still is occupied by the Hosking families since the 14th century. (Angove, 1970)