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    Archive Number
    6511353
    Description
    Black and white aerial photograph of Cwm Twrch Isaf, taken by the Ordnance Survey on 7th May 1993 at an altitude of 8600 feet. Grid reference SN7610. Print enlargement (c. 20") taken from 9" film roll.
    Collection Name
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1993-05-07