Out of all the vaults in the Mojave Wasteland, which one did you find the most disturbing?

I personally found the fate of the Vault 34 dwellers that didn't go with the boomers to be pretty creepy. When I walked into Vault 34, I honestly thought I was gonna find friendly NPCs, considering the Boomers are pretty friendly (if you survived the artillery fire and ignore their paranoia of the outside). But noooo, I was met by waves of ghouls. I walk in, hear a hiss/roar, and I'm just like "dafuq?" And I see to my left a reaver. Gave me a heart attack.