OK sorry if this is a dumb question but I am just about to start Kingmaker and I have been looking at the maps. I assume that the lighter coloured green hexes are plains and the darker coloured ones are hills.
Pitax is south/inside of the Glenebon Uplands
Numeria is both north and east of the Glenebon Uplands
Mivon is south of the Slough and the Greenbelt
Iobaria is west of the Nomen Heights
Breovy is north of the Slough, the Greenbelt, and the Nomen Heights