The Forge hides many secrets in the corners of the mines and dungeons you often wander through. Some intriguing secret places are right under your nose, but it's not always clear how to get there or what to do. Or, conversely, you find an item and don't know where to use it. One such item in the game is a key you receive from the bard. So, let's figure out where to use the Unknown Key in The Forge!

How to Obtain the Unknown Key in The Forge

To get the Unknown Key in The Forge, you need to complete the quest involving the bard's lost guitar. Accept the task from him to find the guitar and head to the secret cave in the Stonewake’s Cross mines. Immediately after descending into the cave, turn left, and in the bushes near the wall, there will be a descent into a secret cave. There, you'll find the guitar next to a skeleton.

After this, return the guitar to the bard, and he will reward you with the Unknown Key!

For more details on how to find the bard's guitar in The Forge, check out our separate guide!

What to Do with The Forge Unknown Key in The Forge

Once you have the Unknown Key, head back to the main caves in the Stonewake’s Cross location. Go to the third tunnel of the cave (the one to the right of NPC Nord). Follow the path until you come across a locked metal grate.

You've probably seen this grate before. Now you can open it using the Unknown Key in The Forge. Hold the E button next to the lock to unlock the grate and enter the Fallen Angel cave.

What's Inside the Fallen Angel Cave | The Forge

How to Obtain the Arcane Pickaxe in The Forge

Now you can enter the inner cave of Fallen Angel, where at the end you'll find the Arcane Pickaxe - one of the strongest tools in the game for mining ore from rocks. The Arcane Pickaxe can be purchased for $125,000.

Arcane Pickaxe Specifications

And that's all — now you know what the Unknown Key is for in The Forge and how to use it. Check out our other guides and materials about The Forge to learn more exciting things about the game!