Ordnance Survey (GB) Land-Form PANORAMA contours 1:50000 (*.ntf)
Ordnance Survey dataset of contours (at 10m intervals) and spot heights, supplied in 20km by 20km grid squares at 1:50,000, in either NTF or DXF format.
DXF data additionally contains footnotes such as source and history of the data.
NTF datasets ©GB Ordnance Survey.
Note: See also: www.ordnancesurvey.co.uk
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