Sierra Madre Vault

The Sierra Madre Vault is a location in the Sierra Madre Casino.

It is the last location The Courier will go before the end of Dead Money DLC. The Courier must make his way through the bowels of the Casino, passing Toxic-Fog, Radio signals and Holograms to end up in the main Vault room,

Layout
Outside the there are several Auto-Turrets, fields blocking the exit to the elevator and the door to Vault room.

The Sierra Madre Casino Vault is different from typical vaults. It only has one room inside it. Inside the actual vault there are 2 terminals and a generator by the door to shut down the security turrets. Opposite the door at the other end a terminal on desk that has message for Vera from sinclair, explaining how he knew what her and Dean were planning. There is also one for Dean on the terminal, but reading dean's causes you to be trapped within the vault and ending the game, then continuing to the last save. There is a screen where you can make contact to Father Elijah, that appears after reading Vera's letter. There is also table with some Sierra Madre Chips, pre-war money and 37 Gold Bars, that comes to 390,239 Caps value but also 1295 weight as each bar weighs 35.00. The Courier can take a maximum of 10 bars without being overencumbered. Lastly there is a first aid box with a wide range of chems and aid, and a cabinet full of Sierra Madre Armour. Also in this cabinet are 6 Stealth Boys. Running under the catwalks leading to the vault terminal room are pipes that can be jumped onto and on these pipes is Sinclair's dead body and his bag containing a copy of Nikola Tesla and You.

Obtaining the Gold
There are at least two reported ways to obtain all the Sierra Madre Chips, pre-war money and 37 Gold Bars and carry them with you out of the vault.

The first is to take everything, which will make you overencumbered, and go to the force field behind which Elijah first appears. Some have reported the ability to throw the gold through the force field such that after you deal with Elijah and the Auto-Turrets you can run through the maze, pick up the bars, and leave the Casino Vault.

The second method is to deal with the Auto-Turrets before entering the casino vault and having the door close behind you. One can either destroy them individually or reach inside of the casino vault and destroy a mechanism just inside to the left (if you have sufficient strength). After that, place explosives at the bottom of the stairway in front of the force field behind which Elijah first appears. C-4, gas bombs, and fire extinguishers can be found throughout the Casino. Go into the Casino Vault and, after speaking to Elijah, exit the door to the Casino Vault carrying all the gold and other valuables. (Save as timing is important in the next part.) Rush (recognizing you are now overencumbered) up to the force field and wait for Elijah to appear. If you are pressed against the force field and trying to move through it when Elijah opens it you will fall inside the room nearest the elevator and Elijah will move to the bottom of the stairs where you have placed the explosives. The force field will reactivate between you and Elijah. Either detonate the C-4 or wait for Elijah to detonate the explosives himself when he fires at you with the Gauss Rifle (the sparks will set them off). Elijah will be killed and the collar timer will start. If you walk to the elevator you can escape before the explosive collar is set off.

Appearances
appears in the Fallout: New Vegas add-on, Dead Money.