Okaay sorry for doubleposting (and for being inactive for so long, I worked on other projects and didn't have time to bother with this one xD), but I've come across some obstacles: There are towns in the bigger rooms of the cave (image can be found earlier in the thread)
and I'm not sure how to depict it, because first: one of them is carved out of the ceiling of the cave.
Second: They are relatively small in relation to the cave and I dunno how to draw them in without breaking the style of the map...
Maybe you people here have some advice?