What color represents relief contours on a topographical map?

Relief contours on a topographical map are represented in brown. This color is specifically used to indicate elevation changes and terrain shapes, helping to visualize the three-dimensional form of the land on a two-dimensional surface. The use of brown enhances the differentiation of contour lines, indicating higher elevations, depressions, and overall changes in landform. Brown lines track the elevation, where each line typically represents a specific change in elevation, allowing map users to interpret the landscape's height and slope effectively. This distinction is crucial for activities such as hiking, land development, and environmental planning, where understanding the elevation and terrain is essential.