seems to be broken :(

if you are having an issue with the train tracks i am uncertain why. they worked for me but there is a fix. You would need 2 mods 81tiles and Move it. if you have access to a tile on the very edge you can build tracks going in and out then select them with move it and copy them. You can then move them to wherever you choose and it still counts as an outside connection. this was the method used for the highway. if you have any questions feel free to message me on discord Harry~#3489 or join my discord linked in the item description

This map has good bones. I love the easy starting squares and the disconnected highway that ensures that ALL traffic is for my city only. There is ONE issue however. When I loaded up the map, I noticed that the outside train tracks were ground level and underwater and therefore did not work. I think other creators got around this by creating a tiny land mass at the edge to connect the outside tracks at ground level, then go to a tunnel. Other than that, I like this map and appreciate your work. :)

Terrain height map: https://imgur.com/a/VX5pb1g

Very good