I noticed that in the underground you get different resources in different sub-areas. For example in the southeast you find mostly oil, while in the southwest dianthus is a more common find. I was wondering if any of you already found out how many sub-areas there are? And where the borders of those areas are? Is the underground split in 4 or 9 subareas or aren't there any squares but is it the background colors on the map? Any experienced underground miners care to comment?
