#Structures
7 field reports in this category
Delta Station
Delta Station is a derelict Alterra Corporation base located on Delta Island, serving as quarters for staff working at the island's docks and Koppa Mining Site. It contains essential blueprints and fragments for early-game progression.
Logged 5/18/2026
Communications Tower
The Communications Tower is a large Alterran structure on Delta Island used for security in Sector Zero. Players can sabotage it using the Test Override Module to disable Alterra's surveillance.
Logged 5/18/2026
Arctic Spires Cache
The Arctic Spires Cache is an Architect mining base in the Arctic Spires biome. It contains Ion Cube components and the remains of an Architect, which can be scanned to unlock the Architect Tissue blueprint for Al-An's Vessel.
Logged 5/18/2026
Architect Phase Gate Facility
The Architect Phase Gate Facility is an Alien Base near Outpost Zero in Subnautica: Below Zero. It serves as the final destination for Al-An and Robin, featuring a warp gate, shuttle platform, and phase gate used to travel to Al-An's homeworld.
Logged 5/18/2026
Architect Bases
Architect Bases are ancient structures built by the Architects on Planet 4546B. This page details their locations, types, and associated achievements in Subnautica and Below Zero.
Logged 5/18/2026
Alterra Bases
A comprehensive list of Alterra Corporation bases and tech sites in Subnautica, including Delta Station, Omega Lab, Outpost Zero, and various excavation sites located across the Arctic and Lilypad Islands biomes.
Logged 5/18/2026
Alien Arches
Alien Arches are large Precursor gateways that allow fast travel between the surface and the Primary Containment Facility. They require Ion Cubes to activate and can be entered by the Prawn Suit or Seamoth.
Logged 5/18/2026