Hidden Valley

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This page is about the Hidden Valley location. For the unmarked location that is home to the Brotherhood of Steel, see Hidden Valley bunker.

Scavengers report hulking individuals moving around Hidden Valley after dusk, but have been unable to identify them due to low visibility.

Mr. New Vegas

Hidden Valley is in a fenced-in area nestled between hills and rocks roughly north-east of the NCR Correctional Facility (NCRCF) and south-east of Sloan. The valley is home to numerous bark scorpions and remnants of the Mojave chapter of the Brotherhood of Steel that once occupied HELIOS One before being defeated by the NCR in Operation: Sunburst.


Hidden Valley is housed in the remnants of a USAF bunker near the heart of the valley. Abandoned even before the war, the area around the bunker is littered with junk. Signs on the roads and peaks leading into the valley warn that it is a USAF testing range and stretches of drooping wire fences form a pathetic barrier in post-apocalyptic times. Upon entering the outer region of the actual bunkers, surviving Prospectors have reported an eerie feeling, and four bunkers, each with an intercom and complete, almost deafening silence on the other side. Others tell of seeing armored figures exiting the Valley from within a raging sandstorm that seems to arrive every evening and stay for the night.[1]

Transcripts from the Hidden Valley bunker terminal:

The goal of the Hidden Valley project is to create a self-sustaining shelter for high-ranking VIPs that can serve as a command structure in times of crisis. The bunker itself is located several hundred feet below the surface. Multiple layers of reinforced materials serve to prevent a breach of the inhabitable areas by anything save for a direct hit by a bunker-busting weapon utilizing a megatonnage considered outside the capability of America's closest competitors. In the event that our enemies become capable of such an attack, the bunker's DERVISH camouflaging system makes targeting the site impossible for automated systems, forcing aggressors to rely on guesswork and sheer luck.[2]

DERVISH Hidden valley

DERVISH camouflaging system in Hidden Valley.


The Hidden Valley Bunker relies on two main systems:

The CANDLE Fusion Power system provides power to all bunker systems. Built more for reliability and duration of service, the power output of the system has been exceeded by many current designs, but it can supply the bunker with power for an estimated 752 years.

The DERVISH Camouflage system provides visual and electronic interference to prevent airborne or long-range enemy weapons from targeting the bunker. The normal soil around Hidden Valley has been supplemented with a combination of aluminum and various silicates, which are then dispersed using a widespread network of industrial fans to blanket the area in a cloud of what is essentially chaff. Combined with the electronic countermeasures of the nearby array at Black Mountain, the bunker at Hidden Valley is effectively impossible to target.[2]


Hidden Valley can be accessed via the road near Sloan and at the northwest and southeast corners where the fence is down. There are also small side-paths, at least one of which is heavily inhabited by bark scorpions and the occasional giant radscorpion when going in the direction of Scorpion Gulch nearby. A hollowed-out rock with a heart and anti-bomb symbol painted on it will be directly in front of you when fast-traveling.

Inside the fenced area, four bunkers are spread around the perimeter of the area. Three of four bunkers are just a large entry room with a locked door on the opposite side that lead to nowhere, but may contain some notable loot.


East bunker

The entry room has 2 skeletons with a bottle of wine on a sleeping mat and a suitcase, which would suggest a sad story. There is also a Campfire. The locked (easy) door in this bunker hides a hundred 5mm rounds and anywhere between twenty and twenty four 5.56mm rounds.

North bunker

At the end of the room behind the locked door (average) is a pair of mini nukes, a stimpak and some 5.56 ammunition.

South bunker

This bunker has two grenade bouquets hanging from the ceiling at the bottom of the staircase. There's also a third Grenade Bouquet located on the high ceiling of the entry room. The entry room contains a sleeping pad and a sack, along with a journal indicating that someone is using the bunker as a safehouse. The locked (hard) door here opens the way to 3 ammunition boxes, a mini nuke under a tin plate which you will have to move in order to see, a steam gauge assembly and 2 units of scrap metal on the right, and frag grenades and some 5.56 ammunition on the left.

West bunker
1111BoS Bunker

The Mojave Wasteland Brotherhood of Steel|Brotherhood bunker known as Hidden Valley bunker.

The fourth bunker, also known as Hidden Valley Bunker, is the home of the Brotherhood of Steel. The bunker is marked by a small broken tree stump directly on top of the dome. You will not be able to gain access to this bunker unless you have taken the holotape containing the passphrase from the two dead Brotherhood of Steel Paladins at the REPCONN Headquarters, the one near Black Mountain, or the 2 dead Brotherhood soldiers in a ditch on the artillery battered area outside Nellis Air Force Base.

If you have the holotape and passphrase, the player will be given the option to say it into the intercom. Otherwise you can attempt to pick the Very Hard lock or by having follower Veronica Santangelo with you. Access can also be granted through the quest Wild Card: Side Bets or by advancing far enough in any storyline to be asked to interact with the BoS.

Related quests

Marked quests

Unmarked quests


  • The South Bunker will be empty when entered unless the Still in the Dark quest has been activated, which will cause the NCR Ranger to appear within near the campfire.
  • Going into the Brotherhood of Steel bunker wearing any type of NCR armor will automatically make the entire bunker hostile. Even if you enter with Veronica as your companion, you will be attacked if you are wearing NCR faction armor.
  • If entering the Brotherhood secure area using the passphrase, you will immediately start the NCR Ranger portion of the Still in the Dark quest. Your weapons and armor will be taken, but will be given back once you have completed this task. See Still in the Dark for more information. You may want to save prior to this.
  • If you pick the lock, the Brotherhood soldiers will not be hostile, but when you leave the bunker again your followers will be locked in the bunker; meaning you have to unlock the very hard door again to get them back or get them after you complete the Still in the Dark quest.
  • If you detonate the self destruct sequence, the DERVISH Camouflage system is disabled and smoke rises up out of the air shaft vents scattered around the bunkers.
  • In the South Bunker there are grenade bouquets hanging from both the ceiling at the bottom of the staircase and in center of the main room. If entering this bunker after receiving the related task as part of Still in the Dark, the traps will be gone, but you will be stopped at the bottom of the stairs by the resident.
  • The interior of the Brotherhood's bunker bears a striking resemblance to Raven Rock from Fallout 3, most likely due to the fact that both bases were built by the U.S military before the Great War.
  • Four Brotherhood of Steel paladins will regularly go out on patrol between 1am - 3am, guarding the area near their bunker until just before dawn.
  • It is still possible to trade with Knight Torres after getting a negative reputation. Put on brotherhood armor, keep your companions waiting far away, then quickly run up to her and initiate dialogue. If done fast enough, then she will trade with you before seeing through your disguise. After you're done, just run away and in around 20 seconds she'll be friendly again.
  • There's a hollowed-out rock in the middle of Hidden Valley.


Hidden Valley appears only in Fallout: New Vegas.


  • pcIcon pc ps3Icon ps3 xbox360Icon xbox360 After wandering though the bunker and exiting out into the wasteland again sometimes might spawn around 2-5 bark scorpions right outside of the bunker you came from. In the later patches, bark scorpions spawn less frequently.
  • ps3Icon ps3 pcIcon pc xbox360Icon xbox360 In the hill paths leading to Hidden Valley, it is possible to encounter deathclaws from Quarry Junction, including the dreaded Deathclaw alpha. It may pop out from under the hills or rocks.
  • ps3Icon ps3 xbox360Icon xbox360 If you fast travel to Hidden Valley and arrive just before the sun rises, the ground may turn black and the distant surrounding areas will have turned into a hazed green. The ground will eventually change back into color but the screen will go completely black afterwards and the game will need to be restarted. A way to avoid this is if you make your way out of Hidden Valley before the screen changes. This is most likely a glitch from the sandstorm that flows throughout the area at night.
    • This may also occur if the player uses the wait function while in Hidden Valley.
  • pcIcon pc A Securitron mk1 may spawn in the bunker, blocking the player.
  • xbox360Icon xbox360 It is possible to get infinite ammunition from the supply footlocker. Take the ammunition, craft something in lvl 2 with it, then return, and the footlocker will be resupplied. Simply exiting and reentering the bunker will also respawn more ammunition.
  • ps3Icon ps3 pcIcon pc Sometimes the BOS will become hostile without apparent reason.
  • ps3Icon ps3 It is possible to go through the ruins blocking the entrance to the Bunker. You are unable to get out however once inside.
  • xbox360Icon xbox360 Victor spawned in the bunker when waiting by the ammunition case.
  • ps3Icon ps3 During the tutorial quest, Sunny Smiles may transport to the Valley.
  • If you approach the valley at night while using cateye or have the Friend of the Night perk, the night vision effect will suddenly fail and the screen will become much darker. This can happen at a distances well over 100 yards away and may surprise people coming from directions where they cannot see the valley itself. This may be an effect of the camouflage system and can be fixed my simply walking in another direction. [platforms tag needed]

See also


  1. Fallout: New Vegas Official Game Guide
  2. 2.0 2.1 Transcripts of data terminal entries "HVBunkerGoalNote" and "HVBunkerSystemsOverview", located within the Hidden Valley Bunker.

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