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Below are the locations of the black boxes in Horizon Forbidden West! Please note that these black boxes can be traded at the Memorial Grove for machine parts. After you turn in all black boxes, you’ll receive the Wings of the Ten (legendary Blastsling).
No Man’s Land Black Box – Inside a crashed plane next to a settlement south of Stone’s Echo
The Whitewatch Peaks – Under some rubble that you can clear using the Pullcaster southwest of Plainsong in the mountains.
Jagged Deep – Located in a submerged plane at the Sunken Barrier, which is south of Plainsong. You’ll need the Diving Mask to reach it.
The Promontory – Located in the front end of a crashed plane behind a sealed door. To open the door, use the energy cell that can be found east of the plane next to the wing in the grass. Once the door is unlocked, head through. In order to access the black box, you’ll need the Vine Cutter which is obtained during the Seeds of the Past main quest.
Bleeding Mark – Southeast of the Ninmah Research Lab in a crashed plane resting in the snowy mountains. Pry the plane’s door open to receive the black box.
The Stillsands – Northwest of the Hidden Ember near the Salvage Yard in a crashed plane. To reach it, you’ll need to have the Vine Cutter. Once you deal with the vine, pry the door open then head inside. The black box can be found behind a crate in the back of the plane.
The Memorial Grove – Southeast of The Maw of the Arena in a crashed plane. To reach it, grapple into the plane then pry open the door.
Salt Bite – Located in the crashed plane at Salt Bite. To reach the black box, pull down the vent near the Hunting Goods vendor.
The Raintrace – Northeast of The Raintrace Salvage Yard. To open the door, obtain an energy cell from the back part of the plane. In order to access it, you’ll need Vine Cutters. After you obtain the cell, insert it into the slot near the locked door.
Bonewhite Tear – Northwest of The Bulwark at a shelter. To open the door, head to the shelter and look next to the stash to find an energy cell. Pick it up then return to the plane and insert it into the slot, causing the door to open.
Stand of the Sentinels – In the mountains north and slightly east of Thornmarsh. In order to reach it, you’ll need to move a crate out of the way.
Isle of Spires – In a plane northeast of the settlement on a waterfall
