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In Borderlands 4, you assume the role of a Vault Hunter, and when you’re not fighting The Timekeeper and his army of Order enemies, you’ll be treasure hunting for vaults.
There are three vaults hidden across Kairos, each in a different region. To open them, you need to gather three specific key fragments. Finding these fragments and defeating the Primordial Bosses inside each vault grants you permanent upgrades for your Glide Pack, making them worth pursuing right from the moment you arrive at The Fadefields.
### All Vault Key Fragments in The Fadefields
| Photo | Location | Description |
|——–|———-|————–|
| ![Image Placeholder] | Coastal Bonescape | Head southwest of The Fadefields to the Stillshore point. Under the tower, on a crate marked ’32,’ you’ll find a vault key fragment. |
| ![Image Placeholder] | The Howl | Northeast of The Launchpad and west of Horace’s Oversight, inside a cave, atop a stone obelisk, lies the second fragment. |
| ![Image Placeholder] | Idolator’s Noose | At Rosemary’s Reserve, northeast of Idolator’s Noose, find a vent on the wall that can be pulled with your grappling hook, revealing a hidden area. Near the circular grate inside, you’ll see a hand extending out holding the last fragment. |
### The Arch Of Inceptus Vault Location
This vault is situated south of the Synthetic Nave and north of The Killing Floors within The Fadefields. Completing the vault increases the regen rate of your Glide Pack.
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### All Vault Key Fragments in The Terminus Range
| Photo | Location | Description |
|——–|———-|————–|
| ![Image Placeholder] | Cuspid Climb | Located west of Lambent Mines, inside a cave atop a cliff above Whistler’s Maw, the first fragment is hidden. |
| ![Image Placeholder] | The Low Leys | At The Pit, northwest of The Thirst Scrap, on a ledge above the road, you’ll find the second fragment beside golden orbs. |
| ![Image Placeholder] | Windspear | Inside The Vestal Garrison on the southern border between Windspear and The Low Leys, on top of a crate, is the final fragment. |
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### The Vault Of Origo Location
Found within The Low Leys, east of Belton’s Bore, this vault is inside the mountain accessible via a cave on the east side. The easiest way to get there is by marking the Auger Shrine and following the Echo-4 trail. Completing this vault reduces the delay before your Glide Pack starts regenerating.
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### All Vault Key Fragments in Carcadia Burn
| Photo | Location | Description |
|——–|———-|————–|
| ![Image Placeholder] | Ruined Sumplands | Northeast near Hull’s Hampbasket, beside water on a cliff surrounded by golden orbs, is the first fragment. |
| ![Image Placeholder] | Makeshift Chalet | South of the chalet, a gas station has the second fragment sitting on a long table on the roof after grappling up. |
| ![Image Placeholder] | Tonnage Peel | At the wreck of The Last Great Hope, crawl under the wreckage through a floor vent to find the third fragment on a stone obelisk. |
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### The Vault Of Radix Location
This vault is east of the propaganda speaker in Stopflow Bowels, within the Grindstone of the Worthy region. Completing it reduces your Glide Pack cost by 50%. After defeating all three Primordial Bosses, you’ll earn the Nothing Left To Guard Trophy or Achievement.
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