Trig point in the Derbyshire Peak District national Park in England erected by the ordnance survey

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Trig point in the Derbyshire Peak District national Park in England erected by the ordinance survey

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Size: 3566px × 5400px
Photo credit: © Eryrie / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: cartographic, cartography, map, mapreading, markers, ordinance, ordnance, pillar, point, reference, survey, triangulation, trig