Width: 30
Height: 20 (-1 because the beach tile is not buildable for some reason)
Between Islands: 4
0: empty (allows building on it)
1: Fishing pond
2: Iron mountain
3: Clay pit
4: Iron mine
5: empty (but prohibits building on it)
Ends in the top left corner of the left tile.
Starts in the bottom right corner of the right tile.
0: Empty
2: Tree
3: ?
5: ?
6: ?
7: ?
8: ?
10: ?