Hornwright testing site 4

Hornwright testing site 4 is a location in the Ash Heap region of Appalachia.

Layout
Hornwright testing site 4 is a small building surrounded by abandoned train cars that are located up the hill from Brim Quarry. Inside the building are two rooms, one of which is a makeshift workshop containing broken robots. An empty refrigerator and assorted junk items can be found at the site.

Notable loot

 * Potential armor mod plan - On the large metal table by the door.
 * Potential recipe - On the large metal table by the door.

Appearances
Hornwright testing site #04 appears only in Fallout 76.