NPRNTeitlMath O SafleArchifauDelweddauNPRN309541TeitlGarreg-Ddu Reservoir, Elan Valley Water SchemeMath O SafleCRONFA DDŴRArchifau21Delweddau14NPRN752TeitlGarreg-Ddu Dam, Elan Valley Water Scheme;Carreg Ddu Viaduct and Submerged DamMath O SafleARGAEArchifau60Delweddau40NPRN270334TeitlPillbox (Type Fw3-24), Llansantffraid-CwmdeuddwrMath O SafleBLWCH AMDDIFFYN MATH FW3/24Archifau1Delweddau1NPRN270333TeitlCoed-y-Foel, Pill Box IMath O SafleBLWCH AMDDIFFYNArchifau4Delweddau4NPRN95469TeitlElan Aqueduct, Elan Valley Water Scheme, Birmingham Corporation WaterworksMath O SafleTRAPHONT DDŴRArchifau10Delweddau2NPRN270332TeitlCoed-y-Foel, Pill Box IIMath O SafleBLWCH AMDDIFFYNArchifau2Delweddau1