What is the name of a map showing hills and valleys by shading rather than by contour lines?

The name of a map showing hills and valleys by shading rather than by contour lines is a "shaded relief map." Shaded relief maps use varying shades of color to represent the elevation of different features on the map, with darker shades typically indicating higher elevations and lighter shades indicating lower elevations. These maps provide a visual representation of the topography of an area and are commonly used in cartography and geography to help readers understand the terrain of a region.