For other uses, see Vault (disambiguation).
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After the Seven Hour War
Before the Uprising
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 Vortigaunt 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 stole 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 (channeled from captive Vortigaunts) constantly flowing to and from it, and inadvertently set him free, believing she was freeing Gordon Freeman.
|Get to the superweapon.|
|Gnome Vault of My Own|
|Bring a garden gnome with you to the Vault.|