It is the westernmost region of the territory and borders the region of Cholla Springs to the northeast and the region of Río Bravo to the southeast. The San Luis River forms the southern border of the region, separating it from Nuevo Paraíso. Based on the presence of Joshua trees and the rough rocky terrain, Gaptooth Ridge is likely based off the Mojave Desert which occurs in eastern California and Nevada, as well as small parts of Arizona and Utah.
This region's properties of being a hot desert, having an abundance of Joshua trees and numerous rugged rock formations make Gaptooth Ridge resemble real-life Joshua Tree National Park in Southern California and other areas throughout Southern California and Nevada, such as the Mojave Desert.
The westernmost mountains in the regions resemble the Granite Mountains , also located in Southern California.
It is possible that "Gaptooth Ridge" may also be called "Gaptooth Desert", as the first treasure map the player can find in Red Dead Online, addresses it as Gaptooh Desert.
"Gaptooth" may be a reference to the dental hygiene of the miners who inhabit the region. Many can be seen having "gaps" where they are missing a tooth or two.
Alternately, it could refer to the western ridgeline between Gaptooth Breach and the Sea of Coronado, as it somewhat resembles a gumline with missing teeth
This is more clearly seen when looking at it from the border of Cholla Springs.
In Red Dead Redemption, Benedict Point is located in Gaptooth Ridge. In Red Dead Redemption 2, it is in Río Bravo instead.
