Mound in Arderry (costello By., Aghamore Par.)

In pasture, located the summit of a hill, the highest point in the locality, with panoramic views to N−NE over flat expanses of bog, to E over Lough Roe and to S−W over a ridge of grassland. A low flat topped subcircular rise (diam. c. 10m; H 0.45m at S; 1.4m at W−N) of earth and stone defined at S−SW by a low scarp and W−NE by a steeper scarp/slope merging with the natural slope. A straight N−S field wall crosses the E edge, and remnants of a stone wall skirt the mound at W−NW. Compiled by: Jane O’Shaughnessy Date of upload: 22 December 2021

Neolithic passage tomb, dating to approximately 3500–2500 BCE. Its location on a prominent hill summit suggests ceremonial or ritual significance, typical of Neolithic funerary and ceremonial sites in the region.