Klamath is a small town not far from Arroyo. Gecko trappers come to Klamath to sell their catch and blow off a bit of steam in the local bars and the "bath" house.
It is a small community of trappers that hunt the giant mutant lizards called little geckos in the area. Highly prized for their pelts, especially golden geckos, they are the lifeblood of this small community. Klamath is the stopping point for caravans on their way to the tiny tribal villages to the north like Arroyo and also serves as a place where members of those tribes can come and exchange information, goods, and news about the larger world.
Downtown is the eastern part of Klamath. It is a mix of agricultural, residential and commercial uses. Plenty of Klamath's citizens can be found wandering around or visiting the two pubs. Aldo will be ready to greet the Chosen when they arrive here.
Trapper Town is the western part of Klamath, where the gecko trappers reside. Slim Picket is the top dog in this town, although he doesn't really have much to say, other than asking for the Chosen One's help with a vermin problem. Underneath the Trapper Town stretch the infamous Rat Caves.
This area is found on the lower right of the entrance of Klamath. This is where Whiskey Bob's moonshine is, and the habitual hunting ground for gecko trappers, populated with a large number of golden and normal geckos.
In the quest "Helping Torr", you can find a pair of Radscorpion limbs in a shack shortly after. This is a cut quest in Klamath where you needed to accuse the Duntons of being cattle rustlers and notify Torr that they were the radscorpions.
The faces on the Klamath map are identical to a WWII "crop corps" poster promoting people to farm to help feed soldiers.
While the game map places Klamath basin in Northern California and northwest of Redding, the actual Klamath Falls is located in southern Oregon, and northeast of Redding. Klamath, California, however, is north west of Redding and on the Pacific coast.
If the player character kills a brahmin in Klamath Downtown, the game will end when the Chosen One leaves the city. This is because the brahmins in Klamath use the script of the brahmins in Arroyo, causing the same effect if killing a brahmin in Arroyo. [verified]