NPRNTitleType Of SiteRelationNPRN403806TitleElan Aqueduct: Knighton Tunnel Observation Tower East, Black HillType Of Siten/aRelationAssociated withNPRN412105TitleElan Aqueduct: Knighton Tunnel Observation Tower West, Black HillType Of Siten/aRelationAssociated withNPRN95469TitleElan Aqueduct, Elan Valley Water Scheme, Birmingham Corporation WaterworksType Of Siten/aRelationPart of
