Abandoned Brotherhood of Steel Bunker

The Abandoned BoS Bunker, officially Bunker 13, is a small grate set into the ground on the east side of the no man's land between Nelson and Camp Forlorn Hope, northeast of Nelson and southeast of Forlorn Hope, with the Colorado River over the cliff to the east. The no man's land is scattered with frag mines, so watch your feet on the way in. A hollowed-out rock just to the southeast holds some random loot.

With the Dead Money add-on installed the bunker becomes important. Your Pip-Boy picks up the Sierra Madre Broadcast and it leads you here. Inside are a headless corpse, Sierra Madre graffiti and a door that warns only experienced couriers should continue. Walking into the bunk room where an old radio plays the broadcast starts the add-on: you are gassed and wake at the Sierra Madre with a bomb collar around your neck. Your gear is taken until you finish, and companions stay behind.

If you have Dead Money, do not walk into the radio room casually, because there is no coming back until the story there is done. Without the add-on the grate is permanently locked, cannot be picked and has no key, so the bunker is only a map marker. After you complete Dead Money it becomes a solid player home with a bed, a workbench, a reloading bench, a Sierra Madre vending machine and Father Elijah's old lab.