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    Bwlch-y-Groes, Trial Mine

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    NPRN505680
    Map ReferenceSH55NE
    Grid ReferenceSH5573959853
    Unitary (Local) AuthorityGwynedd
    Old CountyCaernarfonshire
    CommunityLlanberis
    Type Of SiteTRIAL MINE
    PeriodPost Medieval
    Description
    A single small mine trial located to the north-east of Bryn-mawr quarry (NPRN 400669). It measures 6m in diameter and is up to 1m deep with upcast spoil to the north. P.J. Schofield, OANorth, 13th June 2007