A topographic map is a type of map that accurately represents the shape and features of the land surface, including elevations, depressions, and slopes. Some synonyms for a topographic map include contour map, terrain map, and relief map. A contour map shows the variations in the height and shape of the terrain using contour lines that represent specific elevations. A terrain map is similar to a topographic map, but it may also show some man-made features, such as buildings or roads. A relief map uses shading or other techniques to show the three-dimensional characteristics of the landscape. All of these maps are useful for planning outdoor activities, such as hiking or camping, and for understanding the topography and geology of an area.