While playing I noticed some odd circles on my mini-map (marked with red):
These turned out to be compass roses that also emit lines on the hidden part of the map:
Since their on what appears to be specific locations and also are shown on the mini-map, I thought they might be where they are for some reason. Online I couldn't find anything about it though.
So do these compass roses have any meaning or are they only cosmetical?
Creatures that are appear on hidden parts of the map also show up on the mini-map:
So the question applies to them as well.