Former Clonmass Megalithic Tomb

Thomas Fagan (1845-8) claimed that 'an extensive sepulture' stood 'a few perches' N of the 'Cromlech' (App. 2, No. 11) in this townland but that it had been removed in the course of land reclamation sometime before his visit in 1845. On the basis of local information, he claimed that it had consisted of 'many long graves each enclosed at sides and ends by great slabs and in each of which skulls and other human bones of unusually large size have been found'. The floors of some of the graves were said to have been bedded with sea sand and shells. There is now no trace of any such feature in the vicinity mentioned by Fagan. His second-hand account may well relate to a destroyed megalithic tomb, but more evidence would be required before this could be accepted as one. Fagan 1845-8, book 4, 17. The above description was published in the 'Survey of the Megalithic Tombs of Ireland. Volume VI, County Donegal.' Compiled by: Eamon Cody (Dublin: Stationery Office, 2002). Date of upload: 22 September 2008

Neolithic passage tomb; likely dates to the 4th–3rd millennium BCE. Its mention in 19th-century sources indicates it was part of a broader megalithic landscape, though now lost due to land reclamation.