The area has been charred by the bombs from the Great War and the pools of water are irradiated, thus the Mesquite Mountains crater naturally attracts ghouls. At any given time, there are several feral ghouls, feral ghoul roamers, or feral ghoul reavers roaming the area.
The Mesquite Mountains crater appears only in Fallout: New Vegas.
- [4.19] Mesquite Mountains Crater
In the eastern foothills west of the California Sunset Drive-in [4.18], there's a Mesquite Mountains Lean-To [4.S21] anIcon sic some rather ominous flecks of irradiated matter emanating from the hills behind. This is the location of an ancient crater. There are Feral Ghouls here that remain ready to kill, as well as irradiated tumbleweed. Keep to the rocks and explore further to the west, and a strange two-level shack appears through the haze. This is Hell's Motel. Pass the fungal lower beds and enter the premises, and prepare to repel the advances of a Crazed Mister Handy. He's already put the knife to his erstwhile master Doctor Rotson, who's usually carrying Doctor's Bag on his corpse.
(Fallout: New Vegas Official Game Guide Collector's Edition Tour of the Mojave Wasteland p. 388)