Old Mold Quarry is one of several old, flooded quarries used by AMS in their nuclear experiments. The quarry itself is long gone, but the small AMS control facility remains operational.
Old Mold Quarry is an abandoned quarry filled with dirty water with a small building on the edge of the water. The small building has a weapons workbench inside. To the east is a small unmarked Cult of the Mothman worship site.
- Potential Vault-Tec bobblehead - On a filing cabinet in the building.
- Potential magazine - On the bed of the rusting pickup truck, northwest of the main concrete and metal maintenance pump building, on the road ramp.
Old Mold Quarry appears only in Fallout 76.