Contour lines on a map are typically brown or black in color. They indicate elevation changes on the map.
black
contour lines
Contour lines are lines that connect points of equal elevation. A topographical map is a map that uses contour lines to represent the elevation of land surfaces.
The scale of contour lines on a topographic (terrain) map is called the "contour interval".
A physical map shows mountains, hills, and plains through shading or contour lines. This type of map uses color gradients or elevation contour lines to depict the topography of an area.
Contour lines show levels of elevation, where there are hills and valleys on a map
Contour lines that touch or overlap on a topographic map indicate a
Contour lines that touch or overlap on a topographic map indicate a
an index contour.
"contour lines"
Contour lines that touch or overlap on a topographic map indicate a