Contour Interval

A contour interval is the vertical distance between two consecutive contour lines on a map. Contour lines represent areas of equal elevation; when you see these lines, they help you understand the shape and steepness of the land. For example, if the contour interval is 20 meters, each line indicates that you move up or down by 20 meters as you cross between them. This information is essential for understanding terrain, planning routes for hiking, construction, or any activity that requires awareness of elevation changes.