On 22/12/2010 09:02, Elizabeth Dodd wrote:
I would also point out that in the time of the Cold War the USSR completely mapped the UK from orthophotos, with a little ground work by the spy network. http://www.dailymail.co.uk/news/article-1209137/The-Soviet-road-map-shows-USSR-planned-invade-Manchester.html I have read scholarly articles on this set of maps, but can't provide a link at present.
That article says much of it was copied from OS maps or road atlases etc. It also says "But there's so much extra information, it would be fair to assume that they were able to gather a considerable amount of intelligence on the ground."
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