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    NPRN276282
    Map ReferenceSH76NW
    Grid ReferenceSH7242067520
    Unitary (Local) AuthorityGwynedd
    Old CountyCaernarfonshire
    CommunityCaerhun
    Type Of SiteDAM
    PeriodPost Medieval
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    Description
    Stone dam across Afon Dulyn watercourse. Marked on OS provisional ed map of 1953 along with larger dam wall and remains of former tunnel that led to and from Llyn Eigau reservoir. Dam still in use but renovated(JONES.RS/CAP/2003).