Rio Bravo is the southernmost region of the territory, and borders the regions of Cholla Springs to the Northeast and Gaptooth Ridge to the Northwest. A large portion of the southern border is defined by the San Luis River. Travel through the area is also extremely hazardous, due to the frequent cougar and wolf attacks that occur in the area, particularly in the higher altitudes. This area of the game is most likely based on New Mexico with its dead trees, desert scrub, rock formations and arid conditions.
The area is also sparsely populated compared to the other regions of New Austin, probably due to the absence of major settlements and/or towns.