What is recorded here

Grave is a man-made underground passage in Glenballythomas, County Roscommon, Ireland. Charles O'Conor of Mount Allen opened the passage during late 18th century investigations of Relig na Ri. The entrance leads into a blocked lintelled passage extending at least four metres.

In a quarry (diam. 4m; D 1m) at the W edge of the inner enclosure of Relig na Ri (RO022-057035-). Investigations of the interior of the concentric enclosure had been undertaken by Charles O'Conor of Mount Allen in the late 18th century when the Man-made underground passage was opened, The opening (Wth 1.45m; H 0.85m) leads to a blocked lintelled passage (L 4m plus). This is a National Monument in state ownership: No. 473 Compiled by: Michael Moore Date of upload: 24 August 2010

The monument record does not grant public access. Check the route and ask the landowner before entering private land.