What is represented by the color brown on a topographic map?

The color brown on a topographic map specifically represents contour lines and elevation. Contour lines are used to illustrate the shape and elevation of the terrain, indicating how steep or flat the land is by connecting points of equal elevation. These lines help map users understand the three-dimensional aspects of the landscape on a two-dimensional map.

By using brown for contour lines, the map effectively communicates important geographical information, such as ridges, valleys, and slopes, which is essential for various activities like hiking, planning construction, and environmental studies. This consistent color scheme reinforces the ability to interpret the terrain accurately and aids in navigation and land use planning.