 It is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 and due to its poor condition is on Historic England's, Heritage at Risk Register.In 1813, Joseph Austen inherited the estates of the Treffry family on the death of his mother's brother (he changed his name to Treffry in 1838).He began to develop the assets, particularly the mineral wealth, and saw that the Luxulyan Valley was a convenient route between the south coast and the high ground in mid Cornwall.