Article title is misleading. It's not "3D map", like city map with 3D buildings or something like that, it's just a DEM, digital elevation model. It's not a map

Article title is misleading. It's not "3D map", like city map with 3D buildings or something like that, it's just a DEM, digital elevation model. It's not a map at all. It's useful for addition information to build a map, but it's not a map.