Ancient Fort Security Code Location in Arc Raiders
The Ancient Fort Security Code location in Arc Raiders: the one key class with a fixed spawn area, where it drops, and how the Locked Gate condition works.
Category: Key & Keycard Locations ยท Updated 2026-08-02
Short answer
Where to find it and where to use it
Here is the fact that makes this item worth its own guide.
The four security codes are the only items in the key category with a genuinely fixed spawn area. Every other key in Arc Raiders is a random drop from the shared loot pool: no marker, no guaranteed container, no reliable farm. The codes are the exception. The Ancient Fort Security Code spawns inside the Ancient Fort. That is not a tendency or a community report, that is how the item works.
What that means in practice. Walk to the Ancient Fort in the south of the map. Search it. There is a minimum of one code per round, and more than one can spawn in a single run. You are not gambling on a container roll, you are doing a sweep of a known building.
Sources describe the container slightly differently. The item page says it turns up in any lootable container inside the POI. The Locked Gate page says each code prints in a Code Printer within its area. Those two are easy to reconcile by just searching everything in the fort, which takes less time than working out which source is right.
Where you use it. The Gate Control Room, at one of four terminals. The room is marked on your map when the Locked Gate condition is active. No source pins it to a precise POI, so follow the marker rather than a description.
What it unlocks
Not a door. A map condition.
Locked Gate is a condition exclusive to The Blue Gate. A group has triggered an emergency shutdown at the underground tunnel entrance, and the main gate stays shut until all four codes are entered. The four are:
| Code | Spawns inside |
|---|---|
| Ancient Fort Security Code | Ancient Fort, south |
| Pilgrim's Peak Security Code | Pilgrim's Peak, north east |
| Raider's Refuge Security Code | Raider's Refuge, north west |
| Reinforced Reception Security Code | Reinforced Reception, centre north |
Enter all four and the outer gates open permanently for that raid, and everyone in the lobby gets to walk through them. You are not opening a private room, you are opening the map.
What is inside
Behind the gate: the underground tunnel complex, and it is worth the work.
Guides report weapon lockers, security breaches, a weapon case and a spread of containers in the Security Wing below Reinforced Reception, plus side tunnels stacked with lockers on the way in. The Bobcat SMG blueprint is the headline pull during this condition, most often out of red lockers and drawers, although it can spawn anywhere on the map while the event is running.
Also down there: the door the Blue Gate Confiscation Room Key opens, marked by the MANTIKOR sign. If you are already underground with that key in your pocket, do both.
Expect a Bastion and a spread of ARC in the tunnels. This is not a quiet stroll after the gate opens.
Is it worth the detour
The code itself costs you almost nothing. It is 0 Coins of value, it spawns in a building you were probably going to loot anyway, and you can bank it.
The condition around it is where the cost sits. Locked Gate changes the raid:
- Fewer active Return Points.
- No active Raider Hatches. Your fast personal extract is off the table, which is worth knowing before you buy a Raider Hatch Key for this run.
- A 40 minute cap on the raid.
So the honest answer: grab the code whenever you are in the Ancient Fort, because it is free. Only commit a full raid to the gate run if your squad is set up for the tunnels, because the condition has taken away two of your normal outs.
How keys work in Arc Raiders
The security codes bend two of the four normal rules, which is exactly why they are useful.
- Single use. Same as every key. Consumed on submission at the terminal.
- Lost on death unless it is in your Safe Pocket. Put it there. Dying with three banked codes on your chest is a bad afternoon.
- They do not reset like a locked room. Once the gate is open it stays open for the rest of that raid, for everybody.
- Fixed spawn area, unlike every other key. This is the exception. The code spawns inside its namesake POI, at least once per round.
One quirk worth knowing: a code cannot be deleted from your Speranza stash. The only ways to remove one are dropping it in a raid or submitting it at a terminal.
Other keys on The Blue Gate
The other three codes: Pilgrim's Peak, Raider's Refuge, Reinforced Reception.
Door keys on this map: Blue Gate Cellar Key, Blue Gate Communication Tower Key, Blue Gate Village Key, Blue Gate Confiscation Room Key, Patrol Car Key.
Full list across every map: all Arc Raiders key locations. Map overview: The Blue Gate.
Frequently asked questions
- Where does the Ancient Fort Security Code spawn?
- Inside the Ancient Fort itself, in the south of The Blue Gate. At least one spawns per round and sometimes more than one. This is the rare case where the map marker really is a spawn area, because the code only ever appears inside its namesake POI.
- What is the Ancient Fort Security Code for?
- It is one of four codes needed to open the main gate during the Locked Gate map condition on The Blue Gate. You submit it at one of four terminals in the Gate Control Room, and it is consumed on submission.
- Do I need all four security codes in one raid?
- No. Codes can be extracted and banked, so you can collect them across multiple raids. Bring what you have, submit it, and come back for the rest.
- Can I sell or delete a security code?
- No on both counts. Value is 0 Coins, and it cannot be deleted from your Speranza stash. The only ways to get rid of one are dropping it during a raid or submitting it at a terminal.
- Is the code in a specific container at the Ancient Fort?
- Sources differ. The item page says any lootable container inside the POI. The Locked Gate page says each code prints in a Code Printer within its area. Search everything in the fort and you cover both.