Technically NCR territory, but a lack of core settlements means a disinterest in patrol. Many Wastelander and Tribal form villages across this vast land surviving the occasional Raider insurrection and paying witness to irregular scuffles between NCR patrols and those that would attack them.
The further north you go, the deeper down the Valley of Death you tread. Territory owned by the various Raider gangs that sprout the Wastes. Turf wars, nightly raids, and questionable bonfires keep this area heated year round. Only the hardiest Wanderer seeks passage.