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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    NPRNTeitlMath O SafleArchifauDelweddauNPRN28687TeitlPlas Tan-y-Bwlch; Bwlch Coed Dyffryn; Snowdonia National Park Study CentreMath O SafleTŶArchifau58Delweddau30NPRN715TeitlPlas Tan-y-Bwlch, Main LodgeMath O SaflePORTHDYArchifau6Delweddau3NPRN300232TeitlPlas Tan-y-Bwlch, Upper Lodge; Marys LodgeMath O SaflePORTHDYArchifau5Delweddau4