I recently saw this video by TED-Ed on YouTube, giving a brief overview of the history of Russia. It struck me as being really close to how I'd imagined the history of Felstad. part of a much larger, ancient empire that collapse, cutting off some of its more remote and secretive cities, allowing them to fall into myth and legend.
I'm sure many of you guys will be well aware of all this, but I thought I'd share it for those who might not be familiar with the Keivan-Rus.