Fallout Wiki
Fallout Wiki

Hornwright testing site 3 is a location in the Ash Heap region of Appalachia.


The Hornwright testing sites were used as breach locations for the Motherlode, allowing the employees to pick up the minerals the robot had gathered.[1]


This location is due west of Vault 63, up the hill at the end of the road. It is a small two-room building with assorted junk inside and a first aid. There are some makeshift shelters in the front and back of the building, one of which contains a sleeping bag and a couch. There is a weapons workbench behind the main building.

Notable loot

  • Mini nuke - Inside the workstation, on a wall mounted cabinet shelf.


  • PCPC The "no trespassing" sign located on the fence near the building is wrongly placed.[verification overdue]
  • PCPC The dump truck found downhill has its cargo, size, textures, and hitbox misplaced.[verification overdue]


Hornwright testing site 3 appears in Fallout 76.