I almost have the map for the underside of my flat world done but I need to cut and paste some more mountain ranges and rivers from the original. My players are finally, actually on a ship so I need a map for ocean travel decisions.
I took a portion of the previously posted world map and blew it up. Then I rolled for map symbols and rolled for their placement. This is what I ended up with. I figure Nidus is the small island almost in the center. I'll have some of the crew converse with the players and will have to decide how much they know about the map locations. But what would interest you just from looking at it?