This
is a picture of a contour line map.
http://www.es.mq.edu.au/courses/GEOS264/maps/mapch3/contm.htm
Contour Lines
Katie K.
Contour lines are lines that have the same elevation and pass all points on a map. Contour lines of one elevation never intersect, each line represents one elevation. They can never cross because one point can't have two different elevations. V shaped contour lines mean that the contour lines are crossing a valley. If a stream flows through the valley then the V will flow upstream, it will always go the opposite direction of the stream. These lines form closed loops at the top of hilltops or also known as depressions.
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