What is recorded here

You would have needed a ladder and a lantern to reach the second chamber, but the first stretched seven metres beneath the soil of Garrynadun, the garden of the fort. The plough broke the seal in 1940, exposing an L-shaped drystone chamber that local memory tied to a distant circular fort. Whether it stored grain, hid people, or simply marked the boundary of a forgotten estate, the passage still belongs to the field that swallowed it.

This drystone-built Man-made underground passage was discovered in 1940 while ploughing. A detailed drawing by a local guard indicated that it was L-shaped in plan and consisted of two chambers connected by a drop-hole creep. Access was gained through a dislodged roof-lintel above the creep. The 1st chamber (L 7m; Wth 1.7m) ran NE-SW. The drop-hole creep at the N end of its E side-wall accessed the 2nd chamber (L 2.1m) which ran NW-SE. This chamber was blocked by collapse at its SE end. The field in which the ‘cave’ was situated was locally known as ‘Garrynadun’, the garden of the fort. It was believed that it was connected with a circular fort situated about '400 yds [c. 365m] away’ (see GA128-082----) (SMR file). Not located. Compiled by: Galway Archaeological Survey, UCG Date of upload: 25 October 2019

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