This subject is related to the Combine era.


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For other uses, see Vault (disambiguation).

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This subject is related to the Combine era.

A3 distillery vault.jpg
General information

After the Seven Hour War


Before the Uprising


Quarantine Zone, City 17




Combine occupation



Game information
  • a5_vault
  • a5_ending
"It's not a vault. It's a prison. They didn't build it to keep us OUT. They're trying to keep something IN."
Eli Vance[src]

The Vault is a complex high-security "prison" built by the Combine in the Quarantine Zone with the sole purpose of imprisoning the G-Man, who had been captured sometime prior to the events of Half-Life: Alyx.


The Vault is a superconductive floating prison structure, held aloft by numerous enslaved Vortigaunts inside substations situated throughout the Quarantine Zone. While it is unknown exactly how the Vault functions, it is known to harvest the Vortigaunt’s green electricity to prevent the creation of portals, which would be vital in containing a being like the G-Man. Eli Vance, having stolen a Combine Datapod, first thought the Vault contained a superweapon that could be used against the Combine.

Throughout the course of Half-Life: Alyx, Eli and Russell slowly discover that it is actually a prison designed to contain something (or someone) that the Combine fear. The Vault was destroyed by Alyx Vance in an effort to discover what was contained inside. Alyx discovered that it contained an entire apartment block in an extremely surreal state, ripped from the ground and seemingly frozen in time with all inhabitants (who seem to fade into and out of existence) along with gravitational anomalies. After venturing to the center, she discovered that it contained the G-Man in a large icosahedral cell with green electricity constantly flowing to and from it, and inadvertently set him free, believing she was freeing Gordon Freeman.

Related Achievements[edit]

Half-Life: Alyx
Achievement Point Extraction.jpg Point Extraction
Get to the superweapon.
Achievement Gnome Vault of My Own.jpg Gnome Vault of My Own
Bring a garden gnome with you to the Vault.


  • Just outside the G-Man's icosahedral cell, a dead Advisor can be seen directly beneath the catwalk. Presumably, it died when the Vault crashed.




List of appearances[edit]

Preceded by
Parking Garage
Half-Life: Alyx story arc journey Succeeded by