A Thargoid Surface Site, also designated an Unknown Structure Scan, is a sprawling, seemingly ruined Thargoid structure found on planetary surfaces. The first site was discovered on June 26, 3303 on planet B 1 C of the HIP 19026 system, and over 200 other sites have since been confirmed. They are devoid of any significant Thargoid activity aside from Scavengers, but the systems they are located in are usually swarming with Non-Human Signal Sources.
Thargoid Surface Sites consist of a central, organic-like structure in a crater or depression at the center of a spiral formation with more organic formations protruding from the spiral's eight arms. The central structure is a smaller spiral with shorter arms, reminiscent of a Thargoid Interceptor's general shape. A possible eight-panelled door that is oriented flat with the surface can be seen at the center of the structure. Tunnels lead below the surface and seemingly deeper into the site itself, but are blocked by doors that can only be opened by carrying a Thargoid Sensor or Thargoid Probe. Vehicles that approach or enter the central structure will experience some light electromagnetic interference that disrupts their HUD. There are two types of sites, "active" with no collapsed areas, and "inactive" with collapsed areas. As new sites are discovered, some also appear to be more developed or complete than others, with a greater proportion of their structure visible above ground.
Scattered around the site are "Unknown Uplink Devices" and salvageable but highly corrosive "Unknown Technology Samples". Scanning these can produce three kinds of Material data: Thargoid Material Composition Data, Thargoid Residue Data Analysis, and Thargoid Structural Data. In addition, the Organic Structures across the site can be destroyed to obtain Materials ranging from Sulphur and Iron to Meta-Alloys.
Drone-like entities called Scavengers can also be found throughout the site, but are not hostile until fired upon. They drop various Materials, including Thargoid Fragments, Thargoid Carapaces, Thargoid Energy Cells, Thargoid Organic Circuitry, Thargoid Technology Components, Thargoid Ship Signatures, and Thargoid Wake Data.
Inside the Surface Site is a Thargoid machine identified as an "Unknown Device" which appears alive. Scavengers seem to nourish the Thargoid Eggs on the ground. Activating the machine requires one Thargoid Sensor, Thargoid Probe, and Thargoid Link. All three items will open the door leading into the structure.
Thargoid Links can be found at Surface Sites, but Sensors and Probes will need to be sourced elsewhere and transported to the Sites; Corrosion Resistant Cargo Racks are helpful in this matter. Thargoid Probes can be found orbiting Ammonia Worlds in Threat Level 2 Non-Human Signal Sources. Thargoid Sensors can be found at Alien Crash Sites, such as at HIP 17403 A 4 A or HIP 17862 6 C A, or free floating in various systems within an approximate 150 light year radius from the Merope system.
Once activated with all three objects, the Unknown Device generates what appears to be a holographic star map highlighting specific systems across a galaxy, and emits three "Unknown Signals" that are logged in the Notifications tab. Spectrograms of these signals produce maps. The dot positions appear to change when the star map is generated.
It was also discovered that any one of the various artifacts found at the Ancient Ruins of the Guardians produces an adverse reaction when placed in the Unknown Device. The machine begins pulsing with energy and producing intense heat that can rapidly damage any non-Thargoid vehicles in its vicinity. This reaction lasts for several minutes.
Following Unknown Signals
Thargoid Links can be combined with Unknown Signals to lead the way to other Thargoid Surface Sites. After activating an Unknown Device and acquiring its Unknown Signals, take an Unknown Link into space and deploy it. Next, play one of the Unknown Signals. The Thargoid Link will react and point the way to the location of a system and planet that hosts another Thargoid Surface Site. Notably, these systems usually also feature Ammonia Worlds and a high concentration of Thargoid Sensors.
The first Thargoid Surface Site was located on HIP 19026 B 1 C on June 26, 3303 by CMDR Lightningwing. The Site was the origin of an "Unknown Signal Source" identified after a beacon in Maia directed CMDRs to comm relays in the Electra and Calaeno systems. Logs obtained from Communication Hub Zeta 12 orbiting the planet Electra 4 and Relay Station PSJ-17 orbiting the planet Calaeno 1, both locations associated with the mysterious Black Flight unit, contained the following coded message:
- 12 15 3 1 20 5 4:UKHKMWK RFDKLI RMUQCT: RYRSTJ BFN 19026:NILKTS O 1 C:ILS JFKUR 17:IMKD JFKUR 152:NITLRT QTJTJOTO(Q?) UR:OTS SBT JTRRLDT MUS:
Which decrypted to:
- LOCATED:UNKNOWN SIGNAL SOURCE: SYSTEM HIP 19026:PLANET B 1 C:LAT MINUS 17:LONG MINUS 152:PLEASE REMEMBEB(R?) US:BET THE MESSAGE OUT:
This led directly to the first Site. By the following day, four additional Sites had been discovered in nearby systems. The discoveries were hailed by Professor Palin, a noted Thargoid researcher, as a remarkable development.
On July 5, 3303, Palin acknowledged that the structures provided valuable insight into Thargoid technology and also confirmed a connection between Thargoids and Unknown Artefacts and Probes. Ram Tah, the lead researcher on the Guardians, commented that the reaction Thargoid Unknown Devices have to Guardian artefacts suggests the Thargoids and Guardians may have had prior contact, and that this may not have been peaceful.
The first 15 sites discovered by CMDRs are listed below. The Canonn Interstellar Research Group maintains a 3D Unknown Site Map with additional known locations, and a full list of all 229 sites can be found here. Note that an additional site is believed to exist in the HIP 22460 system, which is also the location of the Megaship Overlook, but this system is currently permit-locked and the site cannot be confirmed. A 229th site was discovered on planet 2 A in the Outotz ST-I d9-6 system, well away from the known Thargoid sites, following a Thargoid attack on The Gnosis on September 6, 3304.
|HIP 19026||B 1 C||Lat: -17°
|Inactive||First site discovered by CMDR Lightningwing on June 26, 3303|
|Pleiades Sector OS-U c2-7||Body: 4 A||Lat: 58.21°
|Inactive||Discovered by CMDR MadRaptor|
|Aries Dark Region DB-X d1-63||A 7 A||Lat: 25.53°
|Inactive||Discovered by CMDR StarfireIX, HD Zak L33T, Emerius, Mr. Pink and SmotheryZorf of Lavigny's Legion|
|Col 285 Sector CV-Y d57||AB 4A||Lat: 4.7863°
|Inactive||Discovered by CMDR StarfireIX, Mr. Pink and Emerius.|
|HIP 14909||2 A||Lat: -26.5°
|Inactive||Discovered by CMDR Tomsen Jaden|
|Mel 22 Sector ZU-P c5-1||4 A||
|Inactive||Discovered by CMDR Two Quiet Suns|
|Mel 22 Sector NX-U d2-27||5 A||Lat: -39.8°
|Discovered by CMDR OhBelgium and Bioann|
|Mel 22 sector NX-U d2-31||3 A||Lat: -51.8°
|Active||Discovered by CMDR Painbeaver|
|Mel 22 Sector YU-F B11-1
||AB 5 A||Lat: -52°
|Active||Discovered by CMDR Nanoexplorer|
|Mel 22 Sector UT-R C4-4||1 A||Lat: 16.14°
|Discovered by CMRD Liquid on 30 Jun 3303, 22:05|
|Mel 22 Sector UE-G B11-0||A 2||Lat: -33.2°
|Active||Discovered by CMDR NanoExplorer on 30 JUN 3303, 22:57|
|HIP 16985||A 4E||Lat: 45.4°
|Discovered by CMDR Julian McCoy and wingmates on 30 JUN 3303, 00:32|
|MEL 22 Sector KC-V D2-28||1 C||Lat: -77.5°
|Discovered by CMDR Julian McCoy and wingmates on 30 JUN 3303, 03:32|
|Mel 22 Sector BV-P C5-2||1 A||Lat: -22°
|Active||Discovered by CMDR Ace Homefoil on 30 JUN 3303, 04:14|
|Mel 22 Sector TT-R C4-2||3 A||Lat: -27.65°
|Active||Discovered by CMDR Julian McCoy on 30 JUN 3303, 04:15|
- Thargoid Surface Sites are labeled "Unknown Structure Scan" in-game, and unlike items such as the Thargoid Sensor (originally named "Unknown Artefact"), they have not received an updated name since their introduction. Frontier Developments internally refers to the sites as "Thargoid Imprints", which can occasionally be seen in Elite Dangerous patch notes.
- Attempting to log-out of the game while at a Thargoid Surface Site triggers a prompt alerting the player that they "are currently in a dangerous region", and that their vehicle will be moved outside that region when they log back in to ensure the player won't be immediately endangered.
- After activating the Unknown Device, there is a chance that a Thargoid Interceptor will jump in and scan the player in their SRV after exiting the interior of the central structure.
- It is theorised, but unconfirmed, that Thargoid Surface Sites are the wreckage of Thargoid Motherships that were destroyed by mycoid at the end of the First Thargoid War. This is based on datamined file names for assets used in the sites.
- GalNet: Thargoid Surveillance in the Pleiades
- /r/EliteDangerous: Couple of news regarding the thargoid ship /base
- YouTube: Elite dangerous, activating UL.
- /r/EliteDangerous: A mystery is afoot
- /r/EliteDangerous: (SPOILERS) Mysterious Structures Found By Cannon group
- Galactic News: Thargoid Structures Discovered
- Galactic News: Specialists Respond to Latest Findings
- /r/EliteDangerous: THIS TIME: We have found all Thargoid Sites! (208)
- Canonn Research: Gnosis Jump Fails
- Frontier Forums: Elite Dangerous: Odyssey Update 6
|Objects and Structures||
|Points of Interest marked with O are only available if Odyssey is installed.|