Now, you’ll want to start making the trip over to Eagles’ Peak. If you have access to the Fairy Rings, you can get there a little quicker by teleporting to the ring near the Woodland Hunting Area and the Piscatoris Fishing Colony, and heading toward Eagles’ Peak from there. Otherwise, it’s not that bad of a walk. When you get to the area, head toward the northwest side of the mountain.

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In this area, you’ll find a tent and some items scattered around on the ground right outside of it.

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Inspect the books that are strewn out all over the ground and you’ll find a Bird Book that will be transferred to your inventory. Click on the option to read the book. Not only will this open the book, but it will cause a metal feather to fall out of it. This will also appear in your inventory.
When you’re done reading the book, go to the top of Eagles’ Peak. You can either walk up the path that winds to the top of the mountain, or you can climb the rocks that are right next to the then if your agility is high enough (25 or greater).

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At the end of the path on top of the mountain, you’ll find a rocky outcrop. Inspect the outcrop and you’ll notice a slot in the middle of the rock that has a carving of a feather above it. Use the metal feather on the rocky outcrop. This will cause a door to open that leads into a tunnel in the mountain.

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