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The typical representation of bluffs (other than rocky) on a topographical map.

Bluffs, Other than Rocky

The typical representation of bluffs (other than rocky) on a topographical map.

The typical representation of rocky bluffs on a topographical map.

Rocky Bluffs

The typical representation of rocky bluffs on a topographical map.

Contour lines never cross on the ground but in rare cases as an overhanging cliff they may cross on the map.

Contour Lines

Contour lines never cross on the ground but in rare cases as an overhanging cliff they may cross on…

A contour about to cross a stream runs up one side and down the other, making a V where it crosses, the angle of the V pointing up stream. Contour lines representing spurs between stream lines are generally U shaped with the bottom or rounded part of the U pointing down hill.

Contour Lines

A contour about to cross a stream runs up one side and down the other, making a V where it crosses,…

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines.

Contour System

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height)…

Contour lines.

Contours

Contour lines.

The typical representation of depression contours, if otherwise ambiguous, on a topographical map.

Depression Contours

The typical representation of depression contours, if otherwise ambiguous, on a topographical map.

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines.

Glacier Contours

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height)…

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines.

Glacier Form Lines

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height)…

The typical representation of sand dunes on a topographical map.

Sand Dunes

The typical representation of sand dunes on a topographical map.

Vertical interval is the difference in elevation between adjacent contours.

Vertical Interval

Vertical interval is the difference in elevation between adjacent contours.