Yellowrock Valley

Yellowrock Valley, formally known in Pre-Fall times as Yellowstone National Park, is a vast forest region surrounded by the Stonebird Mountains that make up its northern, eastern, and southern boundaries. It is the homeland of a primitive tribe of humans known as the Yelstoni, who had once been an independent confederation prior to their enslavement. Most of the land is currently controlled by the confederated nation of Turkhal.

History
After the fall of the original human civilization four million years prior to the arrival of Travis Jefferson High School via the Great Incident, Yellowstone National Park became a refuge for the remaining humans, most of them being Caucasian, who evacuated from the ruined, lifeless cities of the former US states of Utah, Idaho, Montana, and Wyoming. Over time, in a matter of four million years, their descendants, the Yelstoni, had formed Paleolithic tribes with some cultural aspects similar to those of the Cheyenne and Apache tribes prior to their contact with European settlers during Pre-Fall history. For centuries, they lived as hunter-gatherers preying upon deer, rabbits, and Woolly Mammoths while practicing animistic traditions, including the Cult of the Stonebird, which remains the most dominant religion in the region.

However, around 500 years before Travis Jefferson High's arrival, the confederated tribes of Turkhal had invaded the region and enslaved its native population. Since this event, there have been Yelstoni attempts of rebellion against their foreign masters in the hope of securing freedom, all of which have ended in failure.