What is recorded here

Portal tomb in Mihanboy is a portal tomb in Mihanboy, County Roscommon, Ireland. The structure stands on low-lying ground beside a laneway in mixed woodland, where a subsided limestone roofstone destroyed the north side of the chamber. Two sidestones, a two-metre portal stone and a septal-stone survive on the south, while a headstone marked 1748 lies three metres east.

On low-lying, level ground at the N side of a laneway in mixed woodland with a S-N stream c. 40m to the W. The subrectangular limestone roofstone (dims 3m x 3m; T 0.6m) has subsided to the N, destroying the N side of the W-facing chamber, but one N sidestone remains. Two sidestones and the portal stone (H 2m) on the S and the septal-stone survive. A headstone (RO051-043002-) (dims 1.84m x 0.68m; T 0.15m) with an illegible inscription in false relief and the date 1748 lies c. 3m E of the tomb and is reputedly made from the missing portal stone. Archaeological testing (07E1042) c. 80m to the SW failed to produce any related material (Kieran 2010). (English 1969, 1; de Valera and Ó Nualláin 1972, 39) See attached image taken from the S. Compiled by: Michael Moore Date of upload: 24 August 2010 See linked document with details from Ruaidhrí de Valera and Seán Ó Nualláin, Survey of the Megalithic Tombs of Ireland. Volume III. Counties Galway, Roscommon, Leitrim, Longford, Westmeath, Laoighis, Offaly, Kildare, Cavan. (Dublin: Stationery Office, 1972).

Portal tomb, dating to the Neolithic period (c. 4000–2500 BCE). Its significance lies in its characteristic use of a large portal stone and subrectangular capstone, reflecting early megalithic funerary traditions in the region.

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