The Carraig á Mhaistin stone (transl.Bully Rock) is a megalithic tomb located in Cork harbour. It was previously believed to have been an 18th-century folly, built by Murrough O'Brien, 1st Marquess of Thomond, like the nearby Siddons Tower folly.[1]
History
The monument was first reported by antiquarian John Windele after an 1860 visit to the area. A man named Dr. Wise had the capstone raised from where it had fallen.[2]
Condition
The tomb is nearly submerged at the high tide mark, as is the accompanying cairn. The tomb is made of three upright stones largely covered in seaweed and a capstone. It faces east.
Cott, Grace M., Marcel AK Jansen, and Deborah V. Chapman. "Salt-Marshes on peat substrate: where blanket bogs encounter the marine environment." Journal of Coastal Research 28.3 (2012): 700-706. " In other parts of the country, O'Kelly (1945) referred to the Rostellan Dolmen in county Cork, estimated age 4000 BP, which becomes partially submerged at high tide. " doi:10.2112/JCOASTRES-D-11-00108.1
Viney, Michael (2014). Ireland: A Smithsonian Natural History. Smithsonian Institution. ISBN9781588344243. Robert Lloyd Praeger with his wife, Hedwig, standing on Rostellan Cromlech, a megalithic tomb, during a fieldclub conference in 1907
