The group learned of this location from the data recovered from the ColStor. It appeared to be some sort of laboratory or testing site for Babushka Kharisma. With few other options, it appeared to be a good location to set as the destination.
The vault door was sealed, yet operational. After destroying the cameras and ignoring the rants of the Overseer, the door was hacked and opened. While inside, the pristine vault's defenses of ghoul nanotech and defense robots tried to stop the group, but through force of arms as well as non-ghoul nanotech, the group survived long enough to shut the nanotech down and talk the Overseer down from antagonistic behavior