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    Archive NumberTitleLevelDescriptionMediumImagesArchive Number6537124Title71_245_0033 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 21st May 1971 at an altitude of 7,500 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6537139Title71_245_0034 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 21st May 1971 at an altitude of 7,500 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6537125Title71_245_0035 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 21st May 1971 at an altitude of 7,500 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6537126Title71_283_0404 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 21st May 1971 at an altitude of 7,500 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6537140Title71_283_0405 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 21st May 1971 at an altitude of 7,500 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive Number6537127Title83_070_0006 - Ordnance Survey Vertical Aerial Photography CollectionLevelItemDescriptionBlack and white aerial photograph of Trawsfynydd Power Station, taken by the Ordnance Survey on 4th May 1983 at an altitude of 8,000 feet. Grid reference SH6938. Print enlargement (c. 20") taken from 9" film roll.MediumPhoto.ImagesnArchive NumberAP2024_256TitleAP2024_256LevelBatchDescriptionAerial photographic survey of Trawsfynydd Power Station and Grounds. Conducted by Toby Driver of RCAHMW, 10 July 2018.Medium4 .tif files (425 MB). PhotographicImagesnArchive NumberAP2024_256_001TitleAP2024_256_001LevelItemDescriptionTrawsfynydd Power Station and Grounds, with Llyn Trawsfynydd beyond. Oblique aerial photograph taken during the Royal Commission’s programme of archaeological aerial reconnaissance by Toby Driver on 10 July 2018.Medium1 .tif file. PhotographicImagesyArchive NumberAP2024_256_002TitleAP2024_256_002LevelItemDescriptionTrawsfynydd Power Station and Grounds. Oblique aerial photograph taken during the Royal Commission’s programme of archaeological aerial reconnaissance by Toby Driver on 10 July 2018.Medium1 .tif file. PhotographicImagesyArchive NumberAP2024_256_003TitleAP2024_256_003LevelItemDescriptionClose-up view of Trawsfynydd Power Station and Grounds. Oblique aerial photograph taken during the Royal Commission’s programme of archaeological aerial reconnaissance by Toby Driver on 10 July 2018.Medium1 .tif file. PhotographicImagesy