Borderlands 4 Vault Fragments: Locations, Rewards & Upgrades

If there's one thing that the Borderlands franchise is universally known for, it's Vaults, and Borderlands 4 takes Vault Hunting to a whole new level. Vaults in Borderlands 4 are unique hidden areas that require players to track down segments of a key called Vault Fragments.

With Borderlands 4's epic release and the promise of unparalleled looter shooter madness, players are going to be very keen on finding these Vault Fragments and unlocking every main Vault in the game. There's a trick to finding these Vault Fragments, their respective Vaults, and to reaching the end of each region's Primordial Vault.

Quick Links

• How Vault Fragments Work In Borderlands 4

• Every Fragment & Vault Location In Borderlands 4

• All Vault Rewards In Borderlands 4

How Vault Fragments Work In Borderlands 4

Use Silos To Get Hints About Fragment Locations

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In Borderlands 4, there's a somewhat simple yet relatively time-consuming process for tracking down Vaults. There are three main Primordial Vaults to be found using this process, with a fourth Vault being part of the main story of the game.

!!! THIS GUIDE CONTAINS SPOILERS FOR BORDERLANDS 4!!!

Each region of Kairos—The Fadefields, Terminus Range, and Carcadia Burn—has a set of Silo locations that you will need to track down and "capture" in order to receive hints about each Vault Fragment location. Once you capture a Silo, you'll get a yellow circle on your map indicating the waypoint area in which you need to explore.

When you enter the hint area circumference, you'll start a game of Hot and Cold, i.e., the closer you get to the Vault Fragment, the more yellow bars will fill in the meter on your HUD. After collecting all three different Vault Fragments in the region, you'll get a hint about the location of the Vault itself on your map, and you'll use the same method to track down the entrance to the Vault.

After entering the Vault in each region, you'll face a gauntlet of enemies and an ultimate boss, aka "primordial guardians," indicated below. Further, you'll unlock unique and powerful upgrades that can only be found by defeating Vault bosses.

Every Fragment & Vault Location In Borderlands 4

The Fadefields Vault Fragments Lead To The Arch Of Inceptus

The three Vault Fragments in The Fadefields are found near Stillshore, The Launchpad, and Rosemary's Reserve. The first two are relatively straightforward once you have the map location, but the Rosemary's Reserve Fragment must be accessed by moving a grate covering an entrance on the north side of the structure.

The Vault Door for The Fadefields is called The Arch of Inceptus, and is found in the Dissected Plateau, south of The Stubs. Entering the Arch of Inceptus, you'll be required to survive a gauntlet, traversing the area until you reach the Primorial Gaurdian Inceptus boss.

	Region	Location	Map Image
The Fadefields: Vault Fragment 1	Coastal Bonescape	Behind a building at the back of Stillshore
The Fadefields: Vault Fragment 2	The Howl	North of The Launchpad in a small opening in the cliffs
The Fadefields: Vault Fragment 3	Idolator's Noose	Rosemary's Reserve, open the grate on the western side of the structure to get underground
Vault Door: The Arch of Inceptus	Dissected Plateau	South of the Stubs on a tall mountain

The Terminus Range Vault Fragments Lead To The Arch of Origo

You can find the first Vault Fragment in Terminus Range in the Cuspid Climb region north of the Reliquary Silo. You can take the glide lift north to a cliff jutting out of the mountainside where you'll find the fragment. The second Vault Fragment is found in a small opening in the cliffs where you can grapple up to an alcove.

Finally, you'll find the last Terminus Range fragment on the border of Windspear and the Low Leys, inside the Vestal Garrison building. The Vault Door for Terminus Range, the Arch of Origo, is located south of Checkpoint Taupe. Look for the Augur Shrine, and you'll find a cave leading to the Vault Door behind it. After surviving the gauntlet, you'll take on Primordial Guardian Origo.

	Region	Location	Map Image
Terminus Range: Vault Fragment 1	Cuspid Climb	Take the Glide Lift from The Reliquary Silo north to a long ledge jutting out from the cliff
Terminus Range: Vault Fragment 2	The Low Leys	Southeast of The Pit, there's a small opening in the cliff you can climb and grapple up to the Fragment location
Terminus Range: Vault Fragment 3	Windspear & Low Leys Border	Inside The Vestal Garrison building, lower level office room
Vault Door: Arch of Origo	Low Leys	South of Checkpoint Taupe, there's a cave entrance behind the Auger Shrine

The Carcadia Burn Vault Fragments Lead To The Arch Of Radix

Carcadia Burn's Vault Fragments are rather straightforward except for the one in Tonnage Peel, which requires a little detective work to get to. There's an underground tunnel entrance not far from where you'll see the Vault Fragment meter lighting up. You'll need to enter here and find a grate you can pull up with your grappling hook, then drop down into the hole to find the Vault Fragment.

The other two fragments are relatively simple to find, and when you collect all three you'll be able to find the Vault Door at an oasis north of Stopflow Bowels. Radix is the final Primordial Guardian you'll face off against, and defeating him will complete the "Nothing Left To Guard" achievement/trophy.

	Region	Location	Map Image
Carcadia Burn: Vault Fragment 1	Ruined Sumplands	Northeast of Hull's Handbasket
Carcadia Burn: Vault Fragment 2	Tonnage Peel	West of The Wreck of the Last Great Hope, look for an open cargo vessel leading underground, pull up the grate with your grapple and drop to the lowest level
Carcadia Burn: Vault Fragment 3	Lopside	On top of a service station building south of the Makeshift Shalet safehouse
Vault Door: Arch of Radix	Grindstone of the Worthy	At an oasis between Crumblehawl and Stopflow Bowels

All Vault Rewards In Borderlands 4

Rewards For Completing Primordial Vaults Include Glider Upgrades

Collecting all the Vault Fragments and completing each Vault will reward you with a bounty of loot, from guns to XP and beyond. You'll receive XP, cash, Eridium, and one Rare or Epic weapon. Further, each Primordial Vault is packed full of tough enemies that will drop a load of valuable loot, as well as two red loot chests at the end of each one.

More importantly, you'll receive Glide Pack upgrades for each Vault you complete: increased regen rate for The Fadefields Vault, regen delay reduction for Terminus Range, and 50% cost reduction for Carcadia Burn. As mentioned, you will also complete the "Nothing Left To Guard" trophy/achievement for defeating all three Primordial Bosses in Borderlands 4.

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Borderlands 4

Looter Shooter Action Adventure RPG Systems 9/10

OpenCritic Reviews

Top Critic Avg: 84/100 Critics Rec: 96%

Released

September 12, 2025

ESRB

Rating Pending

Developer(s)

Gearbox Software

Publisher(s)

2K

Engine

Unreal Engine 5

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