There are 3 repeating structures:
- Desalination Stations - Marked with dark blue and always have 5 sides if not bordering something, if they are bordering a black line they'll have 4 sides.
- Cavern Entrances - Caverns are all marked with very dark browns shaped in circular shapes usually, there are 4 exceptions though that are all pinned. (Well one of them is just 3 circles stuck together because I was to lazy to just rotate one to make it look nice)
- Mountain Borders - Now mountain borders are really simple, they just denote anywhere that will have high elevation changes, marked in bright orange lines.