What to know
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The locked door is tied to progression: you need Wulfgard’s personal quest completed before access opens up.
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The Mineral Bed you’re trying to reach is on Power Plateau, accessed via Bridge Approach Camp’s overhead corridors.
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This specific Mineral Bed is a Ferrium bed with 5 mining nodes once you’re inside.
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If you’re blocked by a gate/door, it’s usually not a puzzle—you’re simply early for this area.
In Arknights: Endfield, you’ll run into this lock pretty naturally while exploring Power Plateau, because the Mineral Bed looks close enough to reach but is gated by story/side-quest progression.
| Item | Details |
|---|---|
| Area | Power Plateau (Bridge Approach Camp) |
| What you’re unlocking | Access to the overhead corridors and the locked path to the Mineral Bed |
| Main requirement | Complete Wulfgard’s personal side quest |
| Mineral Bed type | Ferrium Bed (5 nodes) |
| Common reason you’re stuck | You’re attempting the door before the quest unlock condition is met |
Why the Bridge Approach Camp door stays locked
The Bridge Approach Camp route to this resource is intentionally “under lock and key” until you finish Wulfgard’s personal quest – The Lone Wolf.
So the door won’t open through brute-force exploration alone.
Location pointers for Bridge Approach Camp and the Mineral Bed
Bridge Approach Camp sits in the Power Plateau region, and the path you need runs through the camp’s overhead corridor network that leads toward the Ferrium Mineral Bed area.
How to open the locked door for the Mineral Bed
Step 1: Confirm you’re targeting the Power Plateau Ferrium bed behind Bridge Approach Camp
If you’re looking at a Ferrium Mineral Bed that appears reachable but is blocked by a locked route from Bridge Approach Camp, you’re in the correct place.
Step 2: Progress until Wulfgard’s personal side quest is available
The access condition is tied to Wulfgard’s personal quest – The Lone Wolf. So if you haven’t seen it yet, keep advancing your quests until it appears in your side-quest list.
Step 3: Complete Wulfgard’s personal side quest
Finishing this quest is what opens access to the overhead corridors connected to Bridge Approach Camp that were locked before completion.
Step 4: Return to Bridge Approach Camp and take the overhead corridor route
After the quest is cleared, head back to Bridge Approach Camp and follow the overhead corridors that previously led to locked access.
Step 5: Go through the now-unlocked door/gate to reach the Mineral Bed
With the lock condition cleared, you can enter the formerly blocked area and reach the Ferrium Mineral Bed.
Step 6: Start harvesting the Ferrium Mineral Bed (5 nodes)
Once inside, you’ll have access to the Ferrium bed in this spot, which contains 5 mining nodes.
Once you unlock it, treat this spot as a long-term farm: place or route your mining setup so you can return quickly and keep your line supplied. Because it’s a 5-node Ferrium bed, it’s worth building around compared to smaller nodes you may have used earlier.
The key detail is that Bridge Approach Camp’s Mineral Bed lock is progression-based, and completing Wulfgard’s personal side quest is what opens the overhead corridor access. After that, you can walk in and tap the 5-node Ferrium bed like any other established resource site.
