http://egsc.usgs.gov/nimamaps/topo.html
A planimetric map is a basic map that depicts only the horizontal position of features, and does not take into account elevation. Planimetric maps are linear, and could be considered the opposite of a topographic map due to its basic (one-dimensional) properties. The map pictured above is a basic planimetric map of Iraq. As you can see, only major cities, roads, lakes, rivers, bodies of water, and oil refineries are depicted in this map, and there is no concept of elevation what so ever.
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