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    Nid oes gennych resi chwilio datblygedig. Ychwanegwch un trwy glicio ar y botwm '+ Ychwanegu Rhes'
    Digital photograph showing external view of Trevithick's Tunnel. Produced by Paul Davis in 2020Further Information
    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    NPRNTeitlMath O SafleCasgliadauDelweddau
    NPRN34853TeitlPlymouth Ironworks: Railway Tunnel;Trevithick's Tunnel, Merthyr Tramroad, Merthyr TydfilMath O SafleTWNNEL RHEILFFORDDCasgliadau8Delweddau3