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Look at all these cryogenic chambers. They must be planning to fill them all with specimens from our planet!Elliott Tercorien

The cryo lab is a location on Mothership Zeta in 2277. It houses frozen humans, super mutants, feral ghouls and raiders.


Cryo lab[]

The deep freeze is where the aliens store the abductees they have tagged for their collections, or those they are not currently experimenting on.[Non-game 1]

On the lower level by the entrance, there is a small room containing a healing archway, three containers and various loot. The teleporter to the far right is used as an exit after the destruction of the generator.

In the middle of the map is a large room full of cryo-pods, aliens and a turret. The player character can defrost all of these at once by pushing the button on the console below the window facing the area. This results in a battle between the ghouls, raiders and aliens. Generally, the turret is the only one left alive after the skirmish. On the bottom level is a cornucopia of Capital Wasteland items.

In the following area, aliens can be viewed in a sealed room examining the bodies of three humans who Elliott Tercorien, if he is with the player character, will recognize as his squadmates. An enraged Elliott will activate a nearby switch freezing all those in the examination chamber, killing the aliens and opening the chamber doors. Within this room, Elliott will gather some cryogenic material, with which he later creates cryo grenades and cryo mines for the player character. In the adjoining room, Elliott contemplates what to do when he discovers two more squadmates still held in cryogenic suspension. With the player character's input, the squadmates can either be temporarily revived, euthanized or, on passing a Speech check, merely left where they are. The squadmates will be hostile (to each other as well) if one attempts to revive them before Elliott has restored their memories. Properly revived, they will fight alongside the player character and Elliott during the first few minutes of the cryo storage zone before expiring.

If one did not opt to bring Elliott along, the examination chamber can be opened by activating the control switch that freezes the examination chamber. However, the dead humans will appear as wastelanders instead of Elliott's squadmates. Furthermore, there will be no opportunity to gather cryogenic material and the two cryogenic suspension containers in the adjoining room will be empty.

Cryo storage[]

This storage facility houses all the abductees in suspended deep-sleep.

This area is primarily a large two-level chamber with a generator situated in a passageway at the northern end. Upon entering, there will be passageways to the left and right, each with a healing archway. The Lone Wanderer can take either route as they both lead to the upper level of the same large chamber containing a number of hostile aliens.

The chamber's upper level has stations with blue tubes containing cryonic pods. Pushing one of the nearby switches sends a pod upwards and raises another from below while releasing a cloud of vapor that momentarily freezes anything nearby. Other switches mounted along the nearby railings deactivate large cryogenic suspension pods on the lower level, each reviving some form of super mutant (dependent on the player character's current level).

In the room to the north, past twisting hallways, will be the generator and a teleportation matrix to exit the room once the generators have been destroyed. The teleporter will take the player character back to the very first room before entering the main part of the cryo lab containing the generator. (The player has to use the teleporter, since the doors leading out of the room where the aliens were cutting up Elliott's men are locked and cannot be opened from the inside.)

Notable loot[]

Alien captive recordings[]

There are a total of six alien captive recorded logs to be collected in these zones; four in the cryo lab (2, 4, 11 and 17) and two in the cryo storage (16 and 25). See the recorded logs for details.

Related quest[]


  • If the player character kills too many enemies here and then heads back to the engineering core to pick up Elliott Tercorien, he will refuse to accompany them back to the cryo lab.
  • In the cryo lab, there are two doors leading to the cryo storage that "require a key." The first time the player character is there, they can press a button to freeze the aliens in the next room, and the doors will open. If they return later on, this will not work, so the player character cannot get past the doors. This means that they should get all of the alien captive recordings before leaving on the first visit. If they do not, they will have to use the teleporter in the cryo lab and backtrack through the cryo storage to get them.
  • Stepping into the freezing gases activated by the switches in the upper level of the cryo storage will cause the player character to fall over stiff momentarily and drop their weapon. This can also be taken advantage of by pressing the button and subjugating nearby attacking aliens.


The cryo lab appears only in the Fallout 3 add-on Mothership Zeta.




  1. Fallout 3 Official Game Guide Game of the Year Edition p. 721: "The deep freeze is where the Aliens store the abductees they have tagged for their collections, or those they aren’t currently experimenting on. Among the frozen are members of Elliott Tercorien's battalion. Most of the time, you’re letting loose rabid Ghouls and Raiders en route to the main Cryo Storage facility itself. For best results, take Elliott with you."