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simply end at the edge of the map. Where one closed contour line surrounds

another, the inner contour line marks the higher elevation. If the contour lines are
hachured, then the inner contour line marks the lower elevation.
7. Where a contour line crosses a stream or a valley, the contour bends to
form a ‘V’ that points upstream or up the valley (Figure 4.4).

River
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50

Fig. 4.4
8. Where two adjacent closed contours indicate opposite slopes (hachured
contour next to a normal contour) both are the same elevation (Figure 4.5).

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50

Map view

50 50

50 50

Hill in a hole Hole on a hill

Fig. 4.5

9. A hachured contour line, lying between two different contour lines, is the
same elevation as the lower contour line (Figure 4.6).

Profile view
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50

Map view

50 60

50

Fig. 4.6
10. A closed contour line, lying between two different contour lines, is the
same elevation as the higher contour line (Figure 4.7).

Profile view
60
50

Map view

50 60

60

Fig. 4.7
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