What does a contour level indicate on a map?

A contour level represents a specific elevation above a given reference point, such as sea level, on a topographic map. When you see contour lines on a map, each line indicates the same elevation throughout its length. The vertical distance between these contour lines is what typifies the changes in terrain elevation. As you move from one contour line to another, the vertical distance is key to understanding how steep or gentle the slope of the terrain is.

For example, if you’re on a map and see that the contour lines are spaced closely together, it indicates a steep slope, whereas lines that are spaced further apart signify a gentler slope. This vertical relationship between the contour lines is crucial for navigation and understanding the landscape, as it helps the viewer gauge elevation changes and plan movement through varied terrain effectively.