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    Manylion
    Delweddau
    Safleoedd Cysylltiedig
    Archifau Cysylltiedig
    NPRN67334
    Cyfeirnod MapSO21SE
    Cyfeirnod GridSO2554010570
    Awdurdod Unedol (Lleol)Sir Fynwy
    Hen SirSir Fynwy
    CymunedLlanfoist Fawr
    Math O SaflePWLL
    CyfnodÔl-Ganoloesol
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    Disgrifiad
    Large pit, 10-15m diameter, c4m deep, conical profile with reed-filled flat base. Located on N side of lane to Llanellen, close to its junction with B4246. Appears to be mining subsidence. (not shown on GIS plot).