A several years dead project finally finished!
This map displays the tunnels, caves, and networks thereof for the Ancestral Plains map for Beasts Of Bermuda. Perhaps not the prettiest but it'll do the job. Proportions and curves may not be accurate but all intersections and forks in the road definitely are and can be used as a guide to get where you want to go.
Also displayed are rock shelters, fish, and freshwater.