What illustrates and identifies the topographic symbols on a land navigation map?

The legend is a crucial component of a land navigation map as it provides the key to understanding the various symbols and markings used throughout the map. It contains explanations of what each symbol represents, such as roads, rivers, buildings, and elevation changes indicated by contour lines. Without the legend, users would have difficulty interpreting the map effectively, potentially leading to navigation errors. It enhances the usability of the map by translating graphical representations into easily understandable information, making it an essential tool for anyone conducting land navigation.