Choose the INCORRECT characteristic of a contour from among the following.

Explanation:

Contour is defined as an imaginary line on the ground surface joining the points of equal elevation.

Contours show distinct characteristic features of the terrain as follows:

1. Contour lines cross a watershed or ridgeline at right angles
2. No two contour lines can meet or cross each other except in the rare case of an overhanging or vertical cliff or wall
3. The direction of the steepest slope is along with the shortest distance between the contours.
4. In the direct method of contouring, the contours are not interpolated.
5. Closely spaced contour lines indicate a steep slope.
6. Widely spaced contour lines indicate a gentle slope.
7. Equally spaced contour lines indicate a uniform slope.
8. Closed contour lines with higher elevation towards the center indicate hills.
9. Closed contour lines with reducing levels towards the center indicate pond or other depression.
10. Contour lines of ridge show higher elevation within the loop of the contours. Contour lines cross the ridge at right angles.
11. Contour lines of the valley show reducing elevation within the loop of the contours. Contour lines cross the valley at right angles.
12. All contour lines must close either within the map boundary or outside.
13. All points on a contour line are of the same elevation.