Old Seshnela in the far west of Genertela is about 240 km wide from north to south and about 320 km long from east to west. It is about twice the size of South England (from Cornwall to Kent and up to Worcestershire). It might well have the weather most like that of England or Brittany in all of Genertela.
It’s also populated by elves and beast men, with a handful of castles ruled by old school Seshnegi. Or at least folk that consider themselves old school Seshnegi.
To the east of Old Seshnela is another fertile and pleasant land, the Tanier River valley. And very populated as well. I imagine a lot of that area to be like the Loire River valley. Here’s our classical Rokari land of fortresses, cities, temples, and rural villages, and the distinctive caste structure of Third Age Malkionism.
This area’s only real connection to Dragon Pass and Prax is through the Holy Country and later through the Wolf Pirates. Trade between the Holy Country (and Handra) and the coastal cities of the Pasos Islands and Nolos is heavy. There might be some small communities of Esrolian merchants in these cities, temples to Issaries and shrines to other Lightbringers. But it is only about 60 years old, and although some merchants may have taken low caste Seshnegi wives, this community is still likely very small.
Now if we were going to explore here as a RQ game, this is a very different setting from Dragon Pass and Prax! The beast people and elves are probably the most familiar.
The Rokari with their strange castes – imagine them from an Orlanthi perspective. The rulers all belong to a clan where every member is ruling caste, and there are several of these groups. Below them are warrior clans, where everyone is a warrior or soldier. There are also numerous clans of workers, crafters, labourers, and agriculturalists. And then there are these clans of priests – sorcerers really – who are recruited from the others, removed from their family and kin, and raised as a caste of magicians. They worship no gods, but worship a long-dead mortal man and their own ancestors.
At the risk of going down into esoterica, here’s a little bit about the ruling talar clans of Tanisor-Seshnela. Some of them were likely of a different caste at the start of the Third Age. For example, the Bailifids were most definitely originally horali in the Second Age, likely an Enerali tribal group that were Malkionized in the Second Age. Many of the other ruling Talar clans lead horali in battle, defend their realms, and even engage in personal combat, which definitely marks them as barbarians to the Brithini. But the ruling clans have a strong alliance with the zzaburi priests and sorcerers, who have long since blessed and sanctified their status as talars.