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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6363737
    Disgrifiad
    Drawing at 1:1000 scale showing an unenclosed platform group in the Llia Valley, as published in the RCAHMW publication The Western Brecon Beacons, figure 60.
    Enw Casgliad
    The Western Brecon Beacons Publication Collection
    Cyfrwng
    Cartographic.
    Cychwynnwr
    RCAHMW
    Dyddiad
    2012