Hidden Valley

 is located in what is apparently an abandoned military establishment, there exists 4 bunkers riddled with anti-war graffiti. The area is nestled between hills and rocks, the main access being via a road near Sloan. Additionally, there are small side-paths, at least one of which heavily inhabited by bark scorpions and the occasional Giant Radscorpion when going in the direction of Scorpion Gulch nearby.

Upon entering each bunker, the player sees an empty room with a locked door and intercom on the opposite side. The locked doors are of varying difficulty. The easy door is confirmed to contain a hundred 5mm rounds. The average door hides a pair of Mini Nukes, a Stimpak, and some 5.56 ammo. In one bunker, there is a grenade bouquet hanging from the ceiling at the bottom of the staircase. Additionally, there is also a journal sitting on a crate, along with a sack with some fruit and other edibles in it. The journal reads, "This location looks like it might make a good safehouse. Warm, dry, and some sort of crazy natural phenomenon at night should keep the predators away. I'd love to start getting set up, but there are a few nearby points of interest I need to gather intel on first. Not sure how long that'll take." At the back of this bunker, there is a hard door that (with a bit of determined rubble climbing) yields 3 ammo boxes, another Mini Nuke and some scrap on the right and a frag grenade and some 5.56 ammo on the left. The fourth bunker is home to the Brotherhood of Steel.

During the night, vicious sand storms rage around the bunkers, which are defense mechanisms the Brotherhood uses to hide their bunker.

Description
In what is apparently an abandoned military establishment, there exists 4 bunkers riddled with anti-war graffiti. The area is nestled between hills and rocks, the main access being via a road. Additionally, there are small side-paths at least one of which heavily inhabited by scorpions.

Upon entering each bunker, the player sees an empty room with a locked door and intercom on the opposite side. The locked doors are of varying difficulty. The easy door contains 100 5mm rounds and a 5.56mm magazine. The average one contains rubble, in this room there are 2 nukes, a stimpack, and a 5.56mm magazine.. In one there is also a journal sitting on a crate, along with some fruit and other edibles in it. Another bunker has a journal, camp fire, and sack, though the owner of this is the NCR Ranger you will meet during Still in the Dark. It also has a hard door which also contains rubble, some ammo crates, and a mini nuke.

This is also the location where you will meet the Brotherhood of Steel. They maintain a bunker which is marked by a small broken tree stump directly on top of the dome. WARNING! Going into this bunker wearing any type of NCR armor will make the paladins immediately hostile!

Note: If you have discovered the two dead Brotherhood of Steel Paladins at the REPCONN Headquarters (on the third floor) or the one near Black Mountain or the 2 dead brotherhood soldiers in a ditch on the artillery battered area outside Nellis Air Force Baseand took the note they were carrying, you can say the password to the intercom of the facility with the Very Hard lock or by having follower Veronica Santangelo with you. You can also gain access through the quest Wild Card: Side Bets.

There are two very hard locked doors in two of the bunkers. Behind one is also rubble. Behind the other one in the entrance to the Brotherhood of Steel bunker, where an explosive collar is placed upon the Courier's neck.

The quests: Still in the Dark and Eyesight to the Blind can be activated here.

Notable loot
If you are looking for a free set of the Brotherhood's armor, one of the three rooms right next to the elder's room contains a set of old T-45d power armor (with helmet) along with a Super Sledge, plasma rifle, and plasma pistol. These are illegal to take and the armor cannot be worn without training.

At the shooting range Knight Torres has on her the key for the door that is on the sub level of the shop-counter, use a stealth boy to pickpocket the key as you cannot get behind her, once you got the key, you can get in the shop from the door below, stealing 4 perfect T-45d power armor 3x T-45d power helmet as well a few rifles, and ammo total value of items is 20k caps+

Appearances
appears in Fallout: New Vegas.

Bugs
When you are in the BoS Bunker you can help Scribe Ibsen isolate a virus in the database. It is possible that using the Science check causes a glitch that leaves you unable to finish the task. Make sure to talk to Ibsen any time the virus jumps and you should be fine.

In some cases. entering and walking down the stairs, after you get disarmed can cause crash to desktop repeatedly.

It is possible to become trapped after starting the quest Still in the Dark. Despite instructions from the elder to perform a task outside the bunker, the door to leave is locked and needs a key. This was solved by pickpocketing a key from the head of security.

When using the 3 BoS leader's key cards, the password authorization terminal for the self destruct sequence sometimes will not work properly and freeze.

At the start of Still in the Dark, Elder McNamara may stop dead in his tracks in the main hall (with the BoS banner in-between the two laser turrets) if you step outside whilst he's on his way to the command room.

You can also get unlimited energy weapons ammo if you just go out and inside the base as many times as you want and making sure you check the black box containing the ammo each time your in the bunker, the ammo varies from micro-fusion cells, energy cells, or electron charge pack

If you have the emergency NCR radio exiting the bunker will sometimes cause a NCR trooper to appear.

Upon setting the base to self-destruct, sometimes when you use the scope on any scoped weapon, no matter what it is, you will get a Terminal screen that doesn't pause the game when you do so.

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.