----------------------------Original message---------------------------- Staff artists and cartographic technicians at the National Geographic Society created the shaded relief by hand when I worked there in the '80s. I suspect its done the same nowdays. Jim Mauck Cartographer NMD/DID/Product Management MS 508 USGS National Center Reston, VA 20192 (703) 648-5561 (703) 648-5939 - Fax >>> Defang Zhou <[log in to unmask]> 12/04 2:24 PM >>> ----------------------------Original message---------------------------- Hi, I have no idea how National Geogaphical make their shaded relief map, i.e, what software they use? what database they use? Do they draw it by hand? Thanks for your information.