I dropped into Cluster Coast and froze — a mansion, a golden fountain, and a silent door that promised more. I circled the property while other players chased obvious drops; one small rubber duck kept catching my eye. You can get inside, but only if you follow the quiet trail I’ll show you.
A quick sighting on the shoreline: where the vault hides, and why it matters
The mansion sits on the southern tip, glossy and obvious; the vault lives directly opposite in a humble building you might pass. Walk through the entrance that faces the mansion and the vault door will be on your left — not hidden under rubble, but hidden by assumption.

Where is the hidden vault in Cluster Coast?
It’s not in the mansion itself. The vault sits across the driveway in a lower, unassuming building — the entrance opposite the mansion is your marker. If you land at the mansion, sweep the nearby structure before anyone else clears it.
A quick real-world check: spotting the clue that starts the whole thing
The giveaway isn’t a code or a hologram — it’s a rubber duck with glasses tucked into water features around the mansion. That duck is your ticket: find it, interact, then carry the key to the glass case inside the opposite building.

How do you get the Duck Key in Fortnite?
The Duck Key comes from a rubber duck wearing glasses that spawns in one of four places: the golden fountain, the left-room pool, the aquarium inside the mansion, or the outside pool. I treated the duck like a tiny neon lighthouse in a sea of marble — it stands out if you give the area a quick sweep.

When you find the rubber duck, interact with it and it drops the Duck Key. Community hubs on Reddit and Discord often note spawn patterns within the hour, and I’ll check short YouTube clips or a Twitch clip for confirmation if I’m unsure.

What do you get inside the vault?
Inside the vault you’ll find two Rare Chests, two regular Chests, two Ammo Crates, and a pile of Gold — I pulled a Legendary Hunting Rifle from one Rare Chest. The payoff is real enough that other players will rotate in once they spot you by the door.

Bring shields and a quick weapon to clear the room — the vault is compact and offers limited cover. I treat the moment of placing the key like pressing a single piano key: one small action, a big reveal.

I use quick scans on the map and a fast breakout plan when I approach — if you’re streaming on Twitch or posting clips to YouTube, this makes for a tight highlight that viewers love. Epic Games keeps rotating map updates, so spawn points sometimes shift; a minute of community checking on Reddit can save you time on the drop.
Ready to try for the Duck Key and risk the scramble at Cluster Coast — will you be the one to walk out with the loot?