Larian Studios Forums Divine Divinity (English) Help/Tips/Tricks Why can't a big strong Warrior CLIMB A HILL?

I'm sure I'll find this out as I get further, but the game map has way too much blacked out area in the dark forest that I can't figure out how to get to yet. Like all the SE (beyond some stream) and SW (from Imps castle West and South).

I assume there is some path through, but I'm not there yet.