What is the differentiation between red brown and brown contour lines?

The differentiation between red brown and brown contour lines primarily relates to their use in cartography. Red brown is typically utilized for maps that are designed to be more light-readable and hence are easier for users to interpret terrain and elevation changes visually. The color red brown stands out against the background, making it particularly useful in topographic maps where clarity and accessibility of information are essential for effective navigation and understanding of the landscape.

Brown lines, on the other hand, serve a different purpose and are more standard in topographic maps to indicate contour lines showing elevation. While they are also important for understanding the terrain, they may not have the same emphasis on visibility as red brown lines, which are often added for enhanced readability.

Therefore, the distinction lies in the intent behind the color choice—red brown enhances readability, while brown marks important terrain features but does not necessarily prioritize visibility in the same way.