Feb 10th 2011 Guest Actually I take that back. I did some research and apparently you have to do Arcade Gannon's quest For Auld Lang Syne. During the quest, you will have to speak to five Enclave personnel and will gain the password through them. West of boulder city and southwest of the 188 trading post, you can walk along the southwest ridge from the post, and you will see a path off to the right when facing helios one, vault 11 is on.
M16 - Vault 22
1. (M16B) Vault 22 - Oxygen Recycling
2. Elevator
M16B Vault 22 - Oxygen Recycling
1. (M16C) Vault 22 - Food Production
2. HEPA 20 Cartridge Filters - [Still in the Dark].
3. Keely - [There Stands the Grass].
M16C Vault 22 - Food Production
1. Door to the cavern
2. (M16B) Vault 22 - Oxygen Recycling
3. Mantis eggs - [Bleed Me Dry].
M16D Vault 22 - living quarters
1. Entrance to quarters
2. Vault 22 Cave Door Keycard - [Still in the Dark].
Fallout: New Vegas Map | Fallout Wiki | Fandom
3. Overseer's office / Terminal
M16E Vault 22 - Pest Control
Fallout New Vegas Vault Locations Map Of The World
1. Computer - [There Stands the Grass].
2. Door to the cavern
3. Keely - [There Stands the Grass]
4. vent with gas - [There Stands the Grass].