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    Archive Number
    6511373
    Description
    Black and white aerial photograph of Cwm Twrch Isaf, taken by the Ordnance Survey on 7th September 1983 at an altitude of 8300 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
    1989-09-07