Site 5 is where all the action is!
Large Wreck Sites:
1: HIP 19026: PLANET B 1 C LAT -17.9526:LONG -152.6844 (
find by lightningwing)
2: Aries Dark Region DB-X D1-63 A 7 A Lat: 25.94° Long: 77.96° (
find by CMDR: StarFireIX and wingmates) (
and via megaship)
3: Pleiades Sector OS-U C2-7 Body: 4 A Lat: 58.21° Long: -177.04° (
found by MadRaptor)
4: Col 285 sector CV-Y D57 AB 4 A 4.78 / 136.27 (
find by PanPiper) (
and via megaship)
5: HIP 14909 2 A Lat: -26.44 Long: -27.47 (
reported by MadRaptor) (
Interactive!)
For the interactive site (site 5):
You'll need a UP & UA - the UA opens the door to the structure, and you will need the UP
1) Get a Corrosion Resistant Cargo Rack (CRCR) from Palin in Maia (you need to have unlocked him) - if you don't have a CRCR then the UP/UA will attack your ship
2)
Find a UP: You need an ammonia world from particular locations -
here - look for Degraded Emission [Threat 2] USS around it. Get to the distance in the 5th column, go to speed between 210 & 350 km/s (
see this post) and wait (maintaining distance approximately) - will probably take at least 30 mins to spawn (other similar methods
here,
here and
here)
3) Find a UA: Easiest to find at the alien crash sites (which are not the same as the wreck sites! - search FP (you are on it

) for 'Alien Wreck' or go to HIP 17403 Planet A 4 A Coord: -34.96 / -141.37. Alien Wreck markers are bugged so don't bother trying to follow them to the wreck.
4) Go to site 5 (HIP 14909 2 A Lat: -26.44 Long: -27.47) land near the structure (Open makes it easier to find the structure as the whole site is huge and all the other CMDRs will be there). Put the UA and UP in the SRV
Note: There is a bug with the UP so you cannot transfer it to your SRV (transaction error) - you need to jettison it from your ship & scoop it back up in the SRV
5) Now the structure will open when you approach an entrance
6) Find a side-room (towards the outside of the structure - there are multiple -
here's a map). Unknown Links will spawn. Shoot one down for later.
You don't need the UP to get the UL, so you could place that first and avoid having to come back for the UL. If the UL does not spawn relog and it should work.
7) Go to the central chamber. There are green squares on the floor - drive over one and the swirly lights will indicate which item matches (one each for UA, UP, UL). Reverse into the bay with the green square and jettison the appropriate item. Repeat for all 3 (you need to go back and find the UL)
8) Scan the central column to see what happens
9) You should now have 3 messages, you can decode the spectogram in them - maybe.
Original posts here:
Path to first Large Wreck Site :
Electra * -> Celaeno * -> Large Wreck Sites #1
* warning - NPC ships will attack
Path to 2nd Large Wreck
Listening Post Pleiades Sector IH-V C2-5 1 C -> HIP 17125 A 3 (Megaship Victoria's Song)
Megaship
Path to 3rd Large Wreck
Pleiades Sector HR-W D1-57 (A3) ->
HIP 17746 3C at 23,1 14,7 -> Pleiades Sector OS-U C2-7
Path to 4th Large Wreck
Listening Post at 42 N Persei (A 7) ->
Megaship Pandora
Path to HIP 14909 (Large Wreck #5) (Interactive)
Found via triangulation of three listening posts:
Pleiades Sector AB-W B2-4 Planet 3
Merope Planet 1 B
HIP 19072 Planet 4
There is also a persistent USS with ship wrecked by thargoids near planet 1
More Listening posts (target is not a Large Wreck Site so far):
HIP 16378 -> Bhadaba (
Grengarr) looks like it's pointing to HIP 16378 3 B, nothing found so far
Other Things
* You can sometimes get
flower-ships visiting you after a visit to the active wreck
*
Don't feed the wreck Ancient Relics, apparently they don't react well to The Guardians tech