Today I would like to share a map that I mage for Viajes National Geographic which is a mix of GIS, 3D and hand drawn map.
The real size is not big, just about 15 cm width, so its not too detailes.
The process used was making a 3D rendering of a Dem of the zone, with a satellite image and a georreferenced map. Then with these three layers as reference, in photoshop... begin to draw the mountains, glaciers etc.... exagerating the mountains etc...
I hope you like it