You will need the Shovel to have access. The bunker's GPS position can also be found on a laptop in a section of the Shovel Cave guarded by 2 Fingers and 2 Legsy.
There is a 3D printer, the Firefighter Axe and the Laser sight and Pistol rail attachments as well as the Tuxedo outfit can be found here. The Maintenance Keycard is also found here. In addition, a laptop contains the GPS location of the Food and Dining Bunker. A handful of Mutant Babies occupy the maintenance/residence section of the bunker.
Required Items[]
- The Shovel found in Shovel Cave
Rewarded Items[]
- The Maintenance Keycard can be used in Food and Dining Bunker and the Entertainment Bunker
- The Tuxedo can be used on Kelvin
- A Laser sight can be used on a pistol/shotgun
- A Pistol rail can be attached to the pistol
- Some 9mm Ammo can be used on a pistol
- A Printed Sled (using 3D Printer) can be used to go down a mountain fast
- A Red Mask (using 3D Printer) can be used to become a Cannibal
- A Grappling Hook (using 3D Printer) can be used to traverse Caves
- A Tech Mesh (using 3D Printer) can be used to make Tech Armor
- A Printed Arrows (using 3D Printer) can be used to shoot with a Compound Bow/Crafted Bow
- A Flask (using 3D Printer) can be used to store water or food made with the Cooking Pot
- The Firefighter Axe can be used as a Weapon

This is where Maintenance Bunker A is located.