- When you reach the Gerudo Fortress while still a child, head toward the back where the boss is. As you approach, you’ll see a Deku Tree Sprout hanging out under a tree
- Speak with him while Link is a child, and he’ll ask for a favor. This is the trigger to start the Biggoron Sword quest
2. Obtain the Goron's Ruby
- You can find the Goron's Ruby behind the Death Mountain Crater
- Head to the Goron Crater area and then to the back and right
- You will see the rocks form an opening just big enough for Link to fit through. Enter!
3. Get the Biggoron Sword
- Upon exiting, you will be at the base of a mountain. Walk straight ahead and find the Goron, Biggoron, trapped inside of boulders.
- Speak with him, and he’ll ask you to find his sword.
- Use the Lens of Truth to find Biggoron’s Sword at the top of the mountain.
- Bring the sword back to Biggoron, and in return, he’ll give you a brand-new one.