http://nwcom.info/Soft/GPS/iGo/iGO8/content/dem/EasternEurope.dem
http://nwcom.info/Soft/GPS/iGo/iGO8/content/dem/Eurasia.dem
http://nwcom.info/Soft/GPS/iGo/iGO8/content/dem/Europe.dem
http://nwcom.info/Soft/GPS/iGo/iGO8/content/dem/WesternEurope.dem