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This article is about Alien Arch Caches. You may be looking for Sanctuary Caches or Lost River Laboratory Cache.

These chambers contain Alien Arches and are scattered throughout the world, located in the Northwestern Mushroom Forest, the Crag Field, the Ghost Forest, the Floating Island, the Mountain Island and the Bulb Zone. Each of these Alien Arch Caches is linked to the Primary Containment Facility with the exception of the Floating Island Arch Cache which is linked to the Mountain Island. A few of the Alien Arches are one-way and cannot be accessed when found in the wild. These are called Slave Arches and correspond with a Master Arch.

This Alien Cache is found in a drop off beside the border with the Crash Zone in the Bulb Zone. It features many stalagmites and stalagtites within, like the Crag Field Arch Cache. The Alien Arch located within links to the Primary Containment Facility. Voxel Shrubs can also be found here.

Flora

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This Alien Cache is found in the Crag Field and links to the Primary Containment Facility. It is located in the deeper areas of the Crag Field, and is notably larger than the Mushroom Forest Cache. It also features many stalactites on the ceiling, but with paths and trenches along them. Growing Voxel Shrubs can be found scattered along the whole Alien Cache, along with Pink Caps and Speckled Rattlers. The player can also walk inside the Alien Cache. Cave Crawlers and Alien Robots are also present within this Alien Cache.

Fauna

Flora

Other

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This Alien Cache is found in a large cave within the Floating Island. It houses an Alien Arch connecting to the Mountain Island. The Alien Cache houses Speckled Rattlers and Pink Caps and various unnamed flora. It also has two entrances, the first is found in a small heap on the surface of the island while the other is found on a small ledge just above the lake in the middle of the island.

Fauna

Flora

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This Alien Cache is located within the Ghost Forest, near the border with the Northern Blood Kelp Zone. It contains many Precursor Lamps, Ghost Roots and a single large Ghost Tree. At the back of the Cache is the Alien Arch, which links to the Primary Containment Facility. It is surrounded by even more Precursor Lamps.

Fauna

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This Alien Cache is found in a small cave near the top of the Mountain Island. It houses an Alien Arch connecting to the Floating Island. The cave houses several clusters of Pink Caps, Speckled Rattlers and Salt Deposits. This Alien Arch Cache is the only one to have a Master Arch as opposed to a Slave Arch.

Fauna

Flora

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This Alien Cache is found in the Northwestern Mushroom Forest and links to the Primary Containment Facility. It is found in a small cave in a trench near the outskirts of the forest. The player is able to walk on the seafloor inside the Alien Cache. It features many stalactites on the ceiling and various types of unnamed Flora.

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