Easter egg indeed!
Arka Sarkar | Staff Writer
Published: Jun 8, 2026 2:04 pm 
The southernmost POI of the island in Fortnite Chapter 7 Season 3, aka Cluster Coast, has a hidden or secret vault for you to access. Unlocking the place requires you to complete a few extra steps. Once you unlock the vault, you’ll find some wonderful rewards.
Let’s find out how to solve this mysterious puzzle to gain access to the vault.
Cluster Coast Hidden Vault location in Fortnite Chapter 7 Season 3
The secret vault in Cluster Coast is located in the building opposite the mansion. Go in through the entrance that’s exactly opposite of the mansion, and you’ll find the door to the vault on your left.
If you’re where I am in the image above, you’ll be in the vault. However, you can’t just waltz your way in. As I mentioned, you’ll first need to unlock the door to access what’s stored inside.
How to unlock the Cluster Coast Hidden Vault in Fortnite Chapter 7 Season 3
To unlock the vault, we will need to find the Duck Key. To get the key, you’ll have to first spot a mysterious rubber duck that wears a pair of glasses. I found it around the golden water fountain in front of the mansion.
However, it can also spawn in the swimming pool in the left room of the mansion. Also check the aquarium in the mansion and the pool outside. The duck will spawn in one of these four locations. You’ll get the chance to interact with it to get the key.
Next, take the key and enter the building that contains the vault. When you enter the door, you’ll find a glass case. Place the key in it, and you’ll open a secret door that leads to the vault.
To find the fault, look at a swimming pool. The vault door is opposite the pool. It will be automatically unlocked once you place the Duck Key.
Head inside, and you’ll get two Rare Chests, two Chests, two Ammo Crates, and plenty of Gold. I also found the Legendary Hunting Rifle from one of the Rare Chests, so make sure to access the vault if possible.
