Hidden Valley Bunker

The Hidden Valley bunker is a location in the Mojave Wasteland. There are several similar-looking bunkers located close to each other in Hidden Valley, southeast of Sloan in the Mojave Wasteland. One particular bunker is the entrance to the home of the Brotherhood of Steel. It can be distinguished from the other bunkers in the area by the small broken tree stump directly on top of the dome.

Exterior
The bunker is marked by a small broken tree stump directly on top of the dome. There is a hollowed-out rock marked with a heart and "no bomb" graffiti located to the west of the entrance to the bunker. The cement wall around the bunker's door includes these graffiti, as well as ones that read, "BAN THE BOMB", "GIVE PEACE A CHANCE!!!", and several others.

You will not be able to gain approved, unaccompanied access to this bunker unless you have recovered at least one of the holotapes from either the two dead Brotherhood of Steel Paladins at the REPCONN Headquarters, the paladins in Moe's crater 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 at least one of the holotapes, you will be given the option to speak its passphrase into the intercom. Alternately, access can be gained by picking the Very Hard lock (lockpick 100), by having Veronica Santangelo as your companion, through the quest Wild Card: Side Bets, or by advancing far enough into any storyline to be asked to investigate the BoS.

Interior
The facility is divided into an entrance area and two main levels. The Brotherhood of Steel Paladins will respawn after a couple days, if players are planning to take it over, it is advised to do so in one trip.

Entrance
After entering the bunker there is a large entry room with a locked door on the opposite side, similar to all the other bunkers in Hidden Valley. On the other side of the locked door (you need a lock-pick skill of 75 to unlock it) is an empty room with open doorways to the left and right, which is guarded by at least two stationary Paladin on the opposition wall. They do not appear if you have brought Veronica with you. The doorway to the left leads to a small office with a desk and a computer terminal, while the doorway to the right leads to stairs going down to the main section of L1.

Hidden Valley bunker, first floor
The first floor contains the personnel quarters, a shooting range, armory, medical bay, and a school/educational room where initiates are trained.

After turning right down the set of stairs into the bunker, turn left, then right, and there are two sets of knight dorm rooms located one above the other with a set of descending stairs for the lower room. Each bed has a footlocker with a combination of a mid-condition laser pistol, energy cells and/or microfusion cells.

Hidden Valley bunker, second floor
The second floor contains the command room with living quarters for the Elder and Head Paladin Hardin. Located next to it, an archive/computer room for the Scribes, a workshop for the knights to repair and manufacture equipment, and a room containing VR chambers which seem to have been placed around the bunker's main reactor.

The Second Floor has the Brotherhood of Steel logo on the wall and two paths that go off to the east and to the west.

The west area has the Command Room with Elder McNamara and another adjoining hallway. Further down the hallway is where you find Head Paladin Hardin; he can be found in either of the two rooms beyond the first room.

The east area contains the archive computer terminals, the Machine shop and the Virtual Reality pod room. The Virtual Reality pod room has both Head Scribe Taggart and Apprentice Watkins; it also houses the self-destruct authorization terminal and the self-destruct terminal (locked - Very Hard). Alternatively, terminals on the same floor of the bunker will give you a password. If you successfully hack the terminal or obtain a password, you can initiate a self-destruct sequence that will immediately vilify you with the Brotherhood of Steel and cause all Brotherhood of Steel members to become hostile. You can abort the sequence by reactivating the terminal and choosing to abort, but this has no effect on their hostility to the player at this point.

Appearances
The Hidden Valley bunker appears only in Fallout: New Vegas.

Bugs

 * If you found and killed a few of the paladins and later bring Veronica they will accept you and let you see the elder. However, you will be trapped in the room and the only way to get out is by pickpocketing the key from the guards. Later upon opening the door, all the paladins and alike will attack you. If you leave L2 all of your stuff will be removed (including caps) and there will be no way in getting them back.
 * The paladin sitting at the shooting range may go missing. His reference ID is: - use the console command  followed by . He then returns with his helmet on.


 * About three or more Brotherhood Paladins my spawn in the same shooting range stall and get stuck there trying to shoot at the target dummy. This may cause one of the Paladins to drop his/her Gauss rifle on the floor next to them. Though the weapon says "steal", it will not have an effect on your Karma, your position with the Brotherhood, nor will any of the nearby Paladins seem to notice you taking the weapon.
 * By zoning out and back in the locker will be refilled with various ammunition, allowing you to collect an unlimited amount of energy ammunition (by constantly zoning in and out) and convert the ammunition into other types of energy ammunition, or even max charge ammunition at the workbench on Level 2.
 * The merchant may begin to lag when asked to see her wares. The merchant will repeat her lines 2-3 more times before the item menu appears.
 * Inhabitants may react to firing exercises on shooting range as real combat and be unresponsive to attempts to communicate.
 * Veronica may repeat any sentence said on the intercom repeatedly, thus making her unable to converse with. This can be fixed by reloading a save.
 * On occasion when visiting the hidden valley bunker with Veronica as a companion the bunker will appear to have been destroyed and the inner entrances blocked with rubble even if you have not set off the self destruct. However if you visit the bunker with Arcade Gannon and ED-E in tow Brotherhood Paladins will spawn and attack upon exiting fast travel. If the courier wears the brotherhood power armor and enters the bunker now the entrances will be open and player will be free to move around the bunker and interact. * Note; NPC's may become hostile towards Arcade and ED-E but will not become hostile to the player provided player is still wearing a brotherhood faction outfit and does not engage in fighting. Player will now be able to operate the self destruct terminal and destroy the hidden valley bunker as evident by the plumes of black smoke coming from the exhaust vents noticeable upon exiting the bunker.
 * If, after entering the room where you are approached and told to give up your weapons, you quickly run up on the side and engage the door—your companions will zone in next to you. This makes it easier to take on all of the guards. You can also go through the conversation and after giving up all of your equipment and weapons, but before you fade completely to black and phase into talk with the elder you sneak-mode and engage the door you will interrupt the sequence and phase behind the door with your companions-sometimes with all of your equipment.
 * Rarely after completing the Brotherhood quest Tend to Your Business and speaking to the elder (and thus receiving Power Armor training) the door exiting L1 to Hidden Valley Bunker will be locked and require a key. Though you have previously received the key after earlier quests, you will no longer have it. Simply go to the Paladins at the bottom of the stairs, and pickpocket a key from them. This will not have an effect on Karma, and they don't seem to notice you reaching under their armor, and taking a key right in front of them.