DEM map

DEM or digital elevation model is a map that is used to represent the height of either a specific feature of area. These maps are particularly useful for terrain analysis since they completely for go all other aspects of the surrounding area. Models representing water flow, precision farming, and base mapping are just a  few of the areas in which this type of mapping is helpful. Since these maps and models place more emphasis on the vertical as opposed to the horizontal it is a good tool to use for determining relief. This is a DEM of part of the ivory coast.

 Link: http://www.mapmart.com/Products/Digital-Elevation-Models/DEM/Digital-Elevation-Model-Ivory-coast.htm