Hi Terry,
I used your "Watchtowers" in one of our last sessions. There ist the tower of "Geneth" rigth on the Istmus located. So I concluded that probably there is also the city of "Geneth", at the very west of U-Lyshak.
But is the frontier fortfied? I could be, the place would be ideal for the "Big U-Lyshak Wall"
It?s sad, we develop quite some material in the area that I would lik you to check but it?s all in German.