Baldur's Gate 3 player character standing in front of the Adamantine Forge
Screenshot by Prima Games.

Baldur’s Gate 3: How to Fix Stuck Lava Valve in BG3

Spin that valve and unveil your prize

The Grymforge is as its name suggest: grim. And also, a forge. But beyond that, it has its fair share of secrets, including a method to create some of the best Act 1 armor in the game and a boss that can cough up some very rare equipment if you know what to do. But to get that far, you’re going to need to tackle the stuck lava valve. Here’s how to fix the stuck lava valve in Baldur’s Gate 3.

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Baldur’s Gate 3: How to Fix the Stuck Lava Valve in the Adamantine Forge

Get as far as the Adamantine Forge and you’ll find that there’s a massive machine. This machine can craft you three types of armor, but to do so you’ll need to fix the stuck lava valve.

And, fortunately, doing so is pretty straightforward. Here’s how to fix the stuck lava valve in the Adamantine Forge in Baldur’s Gate 3, with a more in-depth explanation below:

  • Find a Mould from around the Underdark or Grymforge.
  • Insert the Mould into the coffin-looking vessel in the center of the Adamantine Forge.
  • Insert a piece of Mithril Ore into the Crucible.
  • Pull the lever at the edge of the Adamantine Forge.
  • Once the platform lowers turn on the stuck lava valve.
  • It will now be unstuck!

Moulds are scattered across the area, but the easiest to find are those that are near the Adamantine Forge waypoint. As for Mithril Ore, there are two located not far from the Adamantine Forge, which are marked here on the map.

Related: Baldur’s Gate 3: How to Open the Adamantine Chest (BG3)

To insert the Mithril Ore, press the Mould Chamber. A menu will pop up. Next, open your inventory and find the Mithril Ore. It will be on the character you used to pick it up. Drag the Mithril Ore into the menu box, then press insert.

Once you have all the pieces in place, pull the lever and you’ll descend without issue. You can then turn the lava stuck valve.

Now, get ready for a boss fight that can be pretty challenging if you don’t know the right strategies to take it down.


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Author
Daphne Fama
A Staff Writer at Prima Games since 2022, Daphne Fama spends an inordinate amount playing games of all stripes but has a soft spot for horror, FPS, and RPGs. When she’s not gaming, she’s an author and member of the Horror Writers Association with a debut novel coming out in 2025. In a previous life, she was an attorney but found she preferred fiction to contracts and forms