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OS Contour Lines

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A task to find the altitude of given points on a map by using contour lines.


1:25k OS Map 285 (Southport and Chorley) for each patrol (although the worksheet can be adapted for any other OS map)
A question sheet for each patrol (see below)


Each patrol should be given a copy of the map. They should then use the map to locate the given points and find these points altitude through the use of contour lines. Answers should be given to the nearest 5 or 10m, except where the specific altitude is given.


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