NPRN67391
Cyfeirnod MapSO21SE
Cyfeirnod GridSO2556010380
Awdurdod Unedol (Lleol)Torfaen
Hen SirSir Fynwy
CymunedBlaenavon
Math O SaflePWLL
CyfnodÔl-Ganoloesol
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Disgrifiad
A pair of steep-sided pits aligned E-W, 5m diameter and 2m deep. Caused by subsidence of early C19 ironstone workings.