Coordinates: 35°13'2.26"N 36°1'46.78"W
Location Mid-Atlantic Ridge, North Atlantic Ocean
Capital Site Theta
• Overseer Keith Fourqurean
• Chief Factor, Upsilon Jane Adams
• Site Service Engineer Heather Wolchezk
• Field Service Technician Louise Meuron
• Established 2060s
Omega Space Gun is active 2093 – 2103
(10 years)
Impact Event January 12, 2103
Depth 64m – 4114m
(209ft – 13497ft)
Welcome to PATHOS-II - Your Expressway to the Stars.

PATHOS-II, also known as the PATHOS-II Research Facility,[1] is a sprawling underwater research complex and organization located at 35°13'2.26"N 36°1'46.78"W[2] in the North Atlantic Ocean on the Mid-Atlantic Ridge. It was likely built off of the nearby archipelago of Azores, being approximately 592km southwest from the closest population center of Lajedo on the westernmost isle of Flores Island.

While autonomous and self-sufficient, the Japanese Haimatsu Technologies and European Carthage Industries had stakes in its operation. It's also possible that the United Nations had some involvement as well,[3] which would make sense given the various institutions worldwide that had a vested interest in PATHOS-II's Omega Space Gun.

In terms of surface administration, PATHOS-II has a main port in Lisbon, Portugal, an auxiliary port in Cádiz, Spain, and offices in New York and London.

It is the primary setting of SOMA, along with the mini-series Transmissions.


PATHOS-II was initially built to conduct thermal mining during the 2060s and, later, developed the Omega Space Gun. It has a diverse staff of scientists and engineers involved in multiple research projects such as marine sciences, hydroculture, and deep sea construction. An artificial intelligence known as the WAU was used to oversee primary operations of the facility.

While functionally independent, two major international private corporations had a shared interest in the operation of PATHOS-II. The first company was Haimatsu Technologies, which began the early construction of PATHOS-II and was greatly interested in developing deep-sea mineral resources. Most robotic industrial equipment at PATHOS-II was products of Haimatsu Technologies. The other was Carthage Industries, which gradually took control of PATHOS-II and was more interested in scientific research. Carthage Industries provided most of the advanced digital infrastructure for PATHOS-II which gave the WAU its platform to hijack the station. While Haimatsu Technologies' ambitions for PATHOS-II were purely economical, Carthage Industries secretly viewed the station as the future of mankind, and instructed its employees within the facility to continue the corporation's identity and mission after Telos destroyed the rest of the world.

When a comet impact infamously known as the Impact Event occurred in January 2103, rendering the surface of the Earth barren and killing all surface life, the staff of PATHOS-II became the last living humans on the planet. Knowing they would not be able to survive indefinitely, they began searching for alternative ways to extend their lives and ultimately, save what remains of the human race - the ARK program being among them. Eventually machines previously operated remotely by humans began to become self-aware and started to exhibit human traits, due to interference from the WAU. The facility eventually descended into the nightmarish state seen during the events of the game.


A simplified map of PATHOS-II's primary sites.

PATHOS-II consists of eight underwater platforms and one surface platform, Site Omega. Sites Upsilon, Delta, Theta, Lambda and Omicron are located on a relatively shallow section of the ocean floor referred to as the plateau. Sites Tau, Alpha, and Phi are located on the Omega Sector, a small section of the abyssal plain that lies below this plateau owned and operated by PATHOS-II.

The known depth of PATHOS-II below the surface ranges from 64m – 4114m (209ft – 13497ft), with the average depth of PATHOS-II below the surface being 1206m (3956ft), and if the surface location of Site Omega is included the average depth of PATHOS-II in all its entirety is 1055m (3461ft). Discounting all elevation extremes (Sites Tau, Alpha, Phi, and Omega) the average depth of PATHOS-II is 105m (345ft) below the surface.

  • Site Upsilon - 99m (324ft)
    • Upsilon contains the facility's primary power generation plant. Geothermal boreholes are used to generate electricity. Upsilon also contains extensive facilities used to service and maintain PATHOS-II's collection of robots and Universal Helpers.
  • Site Lambda - 96m (314ft)
    • Little is seen of Lambda in-game, but it is known that Lambda contains a shuttle transit hub that connects all of the other sites. It would have also served as a welcome center for any potential visitors.
  • Site Delta - 64m (209ft)
    • Delta is a small site situated atop an outcropping that extends up from the Abyss. Consisting of several disconnected buildings, a comm antenna and a small control center, Delta is primarily responsible for manufacturing aerodynamic projectile shells for payloads to be launched from the Omega Space Gun.
  • Site Theta - 153m (501ft)
    • Theta is one of the larger complexes, and appears to contain research laboratories, staff living quarters, and administrative offices.
  • Site Omicron - 115m (377ft)
    • Omicron is located on the edge of the plateau, overlooking the Abyss. Omicron is dedicated almost entirely to research, primarily focusing on marine biology, hydroponics, and the effects of structure gel. Omicron also operates the Abyss Climber Rig (ACR), an elevator used to ferry personnel to and from the sites located in the Abyss.
  • Site Tau - 4114m (13497ft)
    • Tau is located in the Abyss, approximately half a kilometer from the lower endpoint of the Climber. Guide lights illuminate a path between the Climber and Tau, used to safely traverse the Abyss without provoking the wildlife. Tau contains several maintenance areas and living quarters for the crew stationed there, as well as a cargo transit system that connects to Phi, originally used for shipping payloads to the space gun.
  • Site Alpha - Depth Unknown
    • Alpha is a secret installation, whose existence is not known by all but a select few of PATHOS-II's staff. Alpha is where the WAU's central core is located, and the origin point of its influence across the station.
  • Site Phi - 3802m (12473ft)
    • Phi is also located in the Abyss, and primarily houses the Omega Space Gun. Phi possesses a receiving depot connected to the rail system from Tau, used to load payloads into aerodynamic "bullets" which are then loaded into the space gun for launch.
  • Site Omega - 0m (0ft)
    • Omega is a topside installation, situated at the point where the space gun's barrel reaches the ocean surface. Omega is primarily a meteorological outpost.

Behind the Scenes

"Pathos" translates from Greek, meaning "suffering" or "experience." Each station on PATHOS-II is also named after a letter of the Greek alphabet.

PATHOS-II was originally supposed to have another station, Site Mu. It can be gleamed from early graphic concepts by David "Didi" Satzinger that Mu was to have been located between Omicron and Tau, possibly originally serving as the station for the Abyss Climber Rig in the abyss.







  1. Full name of PATHOS-II as seen on a clipboard with a maintenance checklist from the Carthage Industries department Carthage Cargo.
  2. Coordinates listed by the ARK tracker. The coordinates are corroborated by a map seen at Theta of PATHOS-II in the North Atlantic Ocean, which shows PATHOS-II's location being at those coordinates.
  3. Not only was the United Nations originally intended to appear on props, there's also the similarity between the logo of the UN and the logo of PATHOS-II, compounded by an early version of the PATHOS-II logo found on some shirts across PATHOS-II that looks nearly identical to the UN logo.