WHERE & HOW TO FARM Where to farm Cuspid Climb, The Low Leys and Windspear in Terminus Range.
This route completes the last of the three regional fragment sets. Collect the pieces at Cuspid Climb, The Low Leys and Windspear, then decide whether to use the assembled key immediately or save the Guardian encounter for a suitable build. Fragment collection is a one-time progression task; the Vault adds a permanent power-up and XP.
Before you go Unlock Terminus Range and the relevant fast travel points. Have glide and grapple movement available for the exposed ledge routes. Be prepared to enter an Order base for the Windspear fragment. Fast travel to The Reliquary and travel to the cliff area west of the Cuspid Climb marker. Glide across to the projecting mountain plateau and enter the cave tunnel. Follow the cave to the fragment and collect it. Travel to Snowy Wells near The Low Leys and climb the rocky path beside the street. Use the grapple point at the upper ledge and collect the fragment. Go to Windspear and enter the Order base. Search the computer room table for the final piece, then use the revealed map marker when ready to enter the Vault. Farming tips The Cuspid Climb route requires a glide to the mountain plateau; start from a high cliff position rather than searching only at the marker. Collect all three pieces before traveling to the regional Vault entrance in The Low Leys. Repeat, collect and use One-time collection of three regional fragments. The key unlocks the Vault; the fragments themselves are not farmable drops.
Common mistakes Trying to reach Cuspid Climb from below: approach from the cliffs and glide to the plateau. Stopping at the first ledge in The Low Leys: continue up the rocky path and grapple to the upper shelf. Searching outside the Windspear base only: the piece is inside, on a table in the computer room. When to stop or switch Stop once the Terminus Range Vault icon appears. Use the key when you are ready to clear the Guardian fight and claim the permanent power-up.
Sources & fact checks REWARD DETAILS & CONDITIONS Sources & rewards All source types Farming route Farming priority Name A–Z Drop chance
Farming route Cuspid Climb, The Low Leys and Windspear in Terminus Range.
Unlock Terminus Range and the relevant fast travel points. Have glide and grapple movement available for the exposed ledge routes. Be prepared to enter an Order base for the Windspear fragment. Rate not listed
Related guides More guides for gathering materials and making progress.
Guide illustration Borderlands 4 Eridium and Vault keys UVH1 Vile Bounties are a late-game repeatable source of Eridium for activities including Big Encore rematches.
Guide illustration Borderlands 4 Eridium and Vault keys The three Fadefields fragments combine into a key that reveals the region’s Primordial Vault and its permanent power-up reward.
Guide illustration Borderlands 4 Eridium and Vault keys Three Carcadia Burn fragments form the key to its Primordial Vault and Guardian encounter.
Guide illustration Borderlands 4 Eridium and Vault keys Vault Symbols grant SDU tokens individually and complete a separate Myth of the Vault collectible challenge.
Find another guide Keep making progress in Borderlands 4.
