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The Crater of Atom is a location in the Commonwealth in 2287.


The crater was ground zero for the high-yield nuclear explosion southwest of Boston (witnessed by the Sole Survivor seconds before descending into Vault 111 in 2077) which devastated Massachusetts and created the Glowing Sea. The crater is now home to members of the Church of the Children of Atom, who treat the location as a holy site and seem inexplicably immune to its deadly radiation.[1][2]


The crater features a large central metal storage shack in the irradiated pool, as well as four wood and metal shacks to the west that house the Children of Atom and serve as additional storage. Brother Ogden offers general trading services. A yellowish-green radioactive aura glows above the crater at all times and is visible from across the Commonwealth, especially at night.


Notable loot


  • Talking to Mother Isolde or Brother Ogden will slowly remove any radiation from the player character.
  • If the player character has joined the Children of the Atom in the Far Harbor add-on, they can mention this to Mother Isolde, who will comment that not many have had the chance to worship in such a holy place. From then on, she will refer to the player character as "our brother/sister from Far Harbor."
  • Attacking and killing the crater's inhabitants will neither turn Virgil hostile nor affect one's current companion's affinity. Not even companions who normally disapprove of harming non-hostiles (Piper or Curie, for instance) will show any reaction at all.
  • The crater's inhabitants react extremely lethargically when under attack. While stealth-killing a single enemy in most hostile locations will almost immediately alert everyone in the area if witnessed, the crater's cultists will only retaliate if one of their own is murdered in plain sight not more than a few feet away. The other inhabitants will simply continue whatever they are doing after the murder, and will even greet the player character when they approach.
  • The crater's inhabitants may occasionally be attacked by wandering hostiles.
  • Due to the ambient radiation, the player character cannot use any of the furniture to wait, even if they are equipped with a hazmat suit.
  • The in-game boundaries of the crater do not match up exactly with the crater as shown on the map; however, the map markers are still correct.


The Crater of Atom only appears in Fallout 4.



  1. Fallout 4 Vault Dweller's Survival Guide Collector's Edition p. 352: ZONE 5: NATICK AND THE GLOWING SEA
    Complete and utter desolation as far as your blistered, irradiated eyes can see. A perpetual cloud of radiation haze. Fierce and toxic storms. If the Deathclaws and Radscorpions don't get you, the radiation sickness might. This is the epicenter of a massive (and highly successful) nuclear strike centered on what is known colloquially as the Crater of Atom. While the northern and riverside fringes of this zone are relatively free of radiation, be sure to stock up on chems and wear proper protective attire once you're south of Natick. Welcome to the Glowing Sea."
    (Fallout 4 Vault Dweller's Survival Guide Map)
  2. Fallout 4 Vault Dweller's Survival Guide Collector's Edition p. 361: 5.24: CRATER OF ATOM
    Warning! Extreme radiation danger! The impact crater that created the Glowing Sea is now a shrine and place of pilgrimage for a strange cult called the Children of the Atom. Ruled by Mother Isolde, they are hostile unless the specified quest is active.