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Best GPS Units for Off-Road Navigation: Finding Your Way on the Trail
The best GPS units offer reliable navigation in even the most off-the-beaten-track areas, including topographical and ...
BBC11mon
Historic England releases map based on 500,000 aerial pictures
More than 500,000 images, such as this one of Housesteads Roman Fort on Hadrian's Wall, were used for the map More than half a million aerial images of historical sites in England have been used ...