Two walkers come off a summit in cloud. One has looked only at the path line on the map. The other has looked at the contours either side of it and knows that the ground should fall gently ahead and to the left for 400 m, then steepen, and that if it starts to fall away to the right she has strayed onto the wrong spur, which ends in crags.…
In this lesson
Contour lines and the interval
Which way is uphill?
The main landforms
How to read them
Cols, knolls and corries
Convex and concave slopes
Gradient and steepness
Worked example
Benchmarks for 1:25,000 with 10 m contours
Intervisibility and dead ground
Reading danger from the map
Check yourself
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The rest of this lesson is in the full course
Every module, practical and exam, self-paced and private, with a certificate at the end.
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