User blog comment:Stormwell/Dunwall Locations/@comment-1500935-20140121165337/@comment-1500935-20140122002855

I agree with you, the rail tracks seem to pass directly from the Golden Cat to Holger Square, though the direction to the bathhouse seem to go back to the Distillery District, but then the direct way is sealed.

Same feeling, the same railroad migth go through the Legal District as well.

Update: you can see the same small island with trees from Holger Square and the Golden Cat. If the places aren't linked they are at least pretty much close to each other.