Mariposa Military Base

Mariposa Military Base was a top-secret United States military facility built to house Forced Evolutionary Virus research previously conducted at West Tek.

Prewar history
The construction of Mariposa started in October 2076 when large progress was made in FEV research, and the government preferred to move the project to a location under military supervision. On January 7, 2077, Major Barnett ordered transfer of all FEV research to the newly-constructed Mariposa Base, despite objections by the research team. The FEV project was moved to Mariposa and tested on human subjects. The vats were giant tanks filled with liquid FEV. As part of the research project, human subjects were dipped inside them and then examined to learn how to control and harness the process.

Wartime events
When the war broke out, Captain Roger Maxson took control and learned about the hideous testing being conduncted under his guard. To stop his men from committing their own judgment, and to punish the scientists he himself despised, he executed them and ordered the men to leave the Military base never to return. The migrated to the Lost Hills bunker and later formed the Brotherhood of Steel.

Postwar history
The Vats were later found by a bunch of explorers seeking to find the source of mutated animals which seemed to originate from the area. Dr. Richard Grey, was one of the explorers, and after falling into the Vats, became the master. Richard grew to be a powerful mutant, he was vastly intelligent, and not dumb like many other mutants (indeed, the FEV was supposed to make subjects more intelligent, but failed to do so on various occasions). He soon learned he could assimilate other minds into his own, and started praying on different creatures. He soon devised the idea of the Unity. He knew he was perfect and wanted to unify the entire wasteland so everyone could bask in his glory.

He knew, of course, there would be resistance, and so used the Vats to create the mutant army. The Military base became the main base of the mutant army, and the super mutants were dipped and created there.

The Vault Dweller destroyed the Vats during the course of Fallout 1.

Appearances in games
The Mariposa Military Base appears in Fallout and Fallout 2.

Fallout

 * FEV Experiment Disk
 * FEV Research
 * West Tech Records

Fallout 2

 * Military Base Outside
 * Military Base Level 1
 * Military Base Level 2
 * Military Base Level 3
 * Military Base Level 4