NPRN67402
Cyfeirnod MapSO21SE
Cyfeirnod GridSO2573010310
Awdurdod Unedol (Lleol)Torfaen
Hen SirSir Fynwy
CymunedBlaenavon
Math O SaflePWLL
CyfnodÔl-Ganoloesol
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Disgrifiad
A steep-sided pit with 2 subsidiary pits inside it. The overall diameter is 10m and the deepest of the pits is 3m. Caused by subsidence of early C19 ironstone workings.