• Cymraeg
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    NPRN407090
    Map ReferenceST09NE
    Grid ReferenceST0901796768
    Unitary (Local) AuthorityMerthyr Tydfil
    Old CountyGlamorgan
    CommunityTreharris
    Type Of SiteRAILWAY TUNNEL
    PeriodPost Medieval
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    Description
    Tunnel, 640m long, taking the Taff Vale Extension railway through to the Cynon valley under the Cefn Glas ridge; disused.
    RCAHMW, 29 November 2007.