I created this map for my own use and I was pleased with how it turned out.
You can view a lower resolution version of the map here:http://www.boardgamegeek.com/image/690489/advanced-civilizat
The map was created using USGS topographic data so that all the geographic features are accurate (though some were adjusted for gameplay reasons). It was then modified in photoshop to get the style that I wanted. This file is a full resolution 10980x5820 pixel image at 300ppi. At this resolution it will print out at 36.6x19.4 inches (93x50 cm). This map size is best suited for square tokens of 0.5 inches (12.5 mm) or smaller (some areas like Greece will still get pretty crowded).
Upload is complete. This is the fifth file archive part of five. Download all five archive parts into the same directory and use a program like WinRAR or 7zip to extract the map file. Let me know what you think.