As there is very little published for 15th level characters in the River Kingdoms area of Golarion and since one of our characters wanted to "push east" to create a holding on the Castrovin Sea I decided to run with that plot line. The map for this area is based on the maps I made last summer.
When designing that map, I just extended the local topography down, allowing mountain chains to trail off and taking what few cues I had from existing sources. That was the easy part. The hard part was coming up with a history and explanation for why this area was never settled. In my opinion, the closeness of a navigable trade route to Casmaron should make that area very popular. So, something must have happened.
In the end, I decided that this once was a settled area. A thousand years before, on the eve of the first, great Kelesh - Taldor conflict, the Taldanes settled this area as their newest prefecture, Eastsea. The goal was to put a permanent Taldane settlement on the Castrovin Sea. But something terrible, terrible happened. Something so awful that sailors and Iobarians avoid this place completely and memory of it has almost been completely wiped from all of Avistan...
So, without further adieu, here is Eastsea as it appeared on the eve of its destruction (as researched by one of the party).
|The Prefecture of Eastsea - as a PC handout.|