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Carcadia Burn in Borderlands 4 presents the Arc de Radix, giving rise to one of the three Primary laps. To unlock the door, you must gather three fragments of the vault spread throughout the region. Once you have them, the path to a powerful power will be open. In addition, completing the lap also gives it permanent buffs, facilitating the trip through the Kairos.
However, finding the fragments can be a nuisance. To make things easier, we have collected the precise location of the three fragments of the Volta to Carcadia Burn.


The fragment of the vault key inside the Lopside area is near the Improvised Chalet Safehouse. From the main road from the outside, direct -to the south until you reach the first exit building after crossing the arch of the rock.


Use the Grapple to climb the building to find a place to eat. The fragment of the vault will be at the top of the table, surrounded by several chairs.


This key is in a secret tunnel in the wreck of the last point of interest of Great Hope. Direct -inside the infested structure of bouquets to the red light to find a metal grate that you can throw with a staple.


Jump through the tunnel and turn to light to the light to find the fragment of the vault in the middle of a stone structure. Don't worry about any ambush, as the whole cave is empty.


The final key to completing the set is approaching a lake at Hull Handbasket Interest. The fragment is in the open, which was undoubtedly taking into account the locations of all the others in the game.


Direct -you go along the slope that leads to the lake and turn right to find a family stone structure with golden balls. The fragment of the vault will be above a small stone structure in the center. With this, you will have the whole key to unlock the radix arch.
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Edited by Mayank Singh Rathour