The Ancient Fort Cellar Puzzle is located on The Blue Gate map of ARC Raiders. It allows players to earn extra loot without facing lethal ARCs or hostile Raiders. While exploring the southeastern areas of the map, you will come across a locked Cellar door in the Ancient Fort Point of Interest (POI). Although getting the door unlocked requires you to complete a three-stage objective, you must always be wary of Bombardiers or Leapers in the vicinity.
This article will walk you through the solution for the Ancient Fort Cellar Puzzle in ARC Raiders.
Where is the Ancient Fort Cellar door in ARC Raiders?
Although the Ancient Fort can be easily located on the in-game map, the Cellar door lies towards the eastern side of this Point of Interest (POI). Here is a map that shows the exact location of the locked door.
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Do keep in mind that lethal ARCs have been seen patrolling a small house towards the northwestern side of Ancient Fort. If you do not spawn close to this corner of the map, then be wary when reaching the Ancient Fort. You may also use the Photoelectric Cloak gadget to hide from any ARC robots.
How to solve the Ancient Fort Cellar Puzzle
To unlock the Ancient Fort Cellar door, you must acquire three Fuel Cells and use them to power up three individual electrical boxes. These interactive elements are scattered around the Ancient Fort in the following sections:
- Follow the wall heading left from the Ancient Fort Cellar door. Just around the corner is the first electrical box.
- Head to the west side of Ancient Fort and locate the stairs. Head up and go left to find an electrical box on your right side.
- From this electrical box, go right, climb the stairs, and then head left inside the room. This is where you will find the third electrical box.
Do note that if you are having difficulty locating these panels, you can follow the wires leading to the electrical boxes from the Cellar door.
Once you solve the Ancient Fort Cellar Puzzle, head down the ladder and scavenge the weapons and loot available in the basement.
All Fuel Cell locations for the Ancient Fort Cellar Puzzle in ARC Raiders
There are a total of 12 Fuel Cell spawn locations near Ancient Fort. Although you only require three to solve the puzzle, you might need to look around for wooden pallets on the ground. These mark their spawn positions and are pinpointed on the map below.

Be on the lookout for any random players who might also be present in this section of the map. This is because the Blue Gate is a high-difficulty region, and Raiders tend to bring endgame loadouts to survive every possible encounter.
This concludes our coverage of the Ancient Fort Cellar Puzzle in ARC Raiders. Ancient Fort Cellar Puzzle in ARC Raiders. Carry a weapon that has high ARC Armor penetration in your loadout so that you can tackle most obstacles that might await you in The Blue Gate.
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