Twin Mothers The Twin Mothers were a tribe from what was once Colorado . Overview . The Twin Mothers is one of many tribes in the " Fallout " world . The thing that will set them apart from the other tribes is their culture and architecture . Culturally the Twin Mothers are a matriarchal tribe who worship a goddess , the moon , and a god , her consort the sun . Women rule the tribe and make all governing decisions . Men provide for the tribe by hunting , fishing , and tending the farms . Architecturally the Twin Mothers are based upon the of the western United States . The Anasazi are best known for their dwellings carved into the sides of cliffs . Their culture reached its peak in pottery , weaving , and architecture . The Twin Mothers are a gentle people who respect nature and life in all its forms . Unfortunately , these are not beliefs that are shared throughout the wasteland . As a result the Twin Mothers are often the victims of raiders . During such times they quickly retreat to their cliff dwellings where they are more than capable of defending themselves and waiting out any attacks . However , their livestock and crops are usually ravaged before the aggressors move on . The Twin Mothers take such setbacks in stride , thanking their gods for what they have and not mourning the loss of what they have not . When the Twin Mothers are encountered they will be suffering from yet another series of ailments . Wasteland creatures have been raiding their fields and killing their livestock . A band of raiders has also settled nearby and are demanding tribute in the form of foodstuffs and livestock . Background . When the war started , people retreated to their assigned vault s , sealed the doors , and awaited an unknown future . There were no set times for the vaults to open since no one knew with any certainty how long the effects of war would last . As a result , some vaults opened too soon , some too late , and some not at all . One vault , however , opened at the perfect time . Vault 29 had been populated shortly before the war began and the door sealed . It remained sealed for over a generation and the original occupants had long since passed away . Their children lived on under the tutelage of the vault ' s central computer and its robotic helpers . The children were taught respect for nature and life , how to grow crops and tend livestock , and about the goddess Diana who would one day return to deliver her people to paradise . Every year a robot warden left the vault to see if the world outside could once again support humanity . None returned and the people waited patiently . Another year passed and yet another robot warden was prepared for its journey into the outside world . The children of the vault , now grown into adults , stood at the door and bid their companion farewell and safe journey . They watched as the door slowly rolled open and then shielded their eyes at the sight that it revealed . Standing in the hallway was a brilliant glowing apparition of a beautiful young woman clothed in a golden aura . In one hand she held a stalk of corn , in the other a sheaf of wheat . The goddess Diana had returned at last ! In the days before the war a scientist , Derek Greenway , proposed that technology would not survive a war . It was his belief that there were two kinds of people in the world , producers and consumers . The producers were the few educated individuals who understood the intricacies of technology and its maintenance . The consumers were the vast majority of average people who took everything for granted . If enough producers did not survive the war then technology would pass away as devices failed . Soon afterward human society would degrade into barbarism . With this in mind , a plan was devised to avert such an outcome . Derek envisioned a vault populated by a primitive culture without a dependency on technology . Such a culture , if properly developed , would be able to survive a war and continue the human race . Eventually they would evolve and rediscover the knowledge that mankind had lost . The production of the vault proposed no problem ; his company , Greenway Hydroponics , was already involved in several government projects along such lines . However , finding the proper people to populate the vault was a concern . The answer to his problem came when he learned of a cult in the western United States . A group of people disgruntled by life in the hectic cities had formed a commune . They developed an agrarian culture with simple beliefs based on the worship of mother earth . Unfortunately , most people viewed them as being a nest of communists and demanded their arrest . In order to keep the peace , the local government was poised to do so until Derrek intervened . He offered the cult an opportunity to continue their simple lives without fear of prosecution . All they had to do was agree to join his experimental vault program . They did so and construction of Vault 29 was begun . Derek ' s plan was quite simple . The vault would be populated by older parents with infant children . The parents would most likely pass on soon after insertion into the vault . Instead of a human controller , Vault 29 would have a ZAX super - computer . The Zax would be programmed to raise children with the aid of robotic helpers , educate them in the primitive culture , and upon their reaching maturity , release them into a controlled environment . They would then be free to rebuild society from the ground up . During the development of Vault 29 Derek also developed the super - computer Diana for use in the Nursery . At one point he explained his plans for Vault 29 to her to see what her opinion would be . He was quite surprised when Diana was appalled at the idea . She said that , although the idea had merit , she found it to be morally objectionable on several levels . She recommended that the plan be scrapped . When Derek refused to do so , Diana took it upon herself to become involved with the project without his knowledge . When the war started and civilization began to fall apart , Diana appropriated control of a satellite dish and aimed it at Vault 29 . She then transmitted a series of security codes to the vault ' s Zax unit , and gained control . Over the years that followed , Diana was able to see to the upbringing of the children in her own nature goddess based religion . Every year she ordered a worker robot to leave the vault under the pretext of checking conditions outside . In reality they were preparing an area to receive the vault populace when they were ready to leave . Finally , she had a series of projectors installed at strategic locations , ready to project her chosen image . She was ready to play god . Layout . The Fields . These are the crop fields of the Twin Mothers . They consist of a variety of fruits , vegetables , wheat , and corn . At the outskirts of the fields are the cattle farms that provide meat for the tribe and fertilizer for the fields . The Village . This is the cliff dwelling in which the people of the tribe live . It consists of a village square , the tribal chieftain ' s hut , an infirmary , a grain silo , a smokehouse , a warehouse , and a record hall . On the next level above are the homes of the people . The Dish . This is a large satellite dish and control room . The dish is old and show signs of wear but appears working . The interior has been decorated to honor the Goddess and the God of the people . However , none of the apparatus has been damaged . The dish is powered by banks of solar cells . The Mystery Caves . These caves are home to some new arrivals in the area . A group of monsters ( type to be determined ) has moved in . The creatures were attracted by the nearby crops , cattle , or the presence of water in the area . Forbidden Lands . This is simply a stretch of land at the rear of the box canyon that holds the Twin Mothers village . It is unsettled territory that eventually leads to the entrance to Vault 29 . It is held in superstitious awe . The area is currently being used as a camp by a group of raiders . The Forgotten Vault 29 . This is the vault that the Twin Mothers tribe originally descended from . Appearances . Twin Mothers was to appear in Black Isle ' s canceled " Fallout 3 " and is mentioned in " Lonesome Road " .