You need to find the artifacts for the five tombs in order to unlock Eden Pime Station, not just the treasures. Here is a video detailing how to get them:
Tombs with Artifacts:
Time stamps:
All 5 Artifact Locations Tombs of the Fallen Assassin's Creed Valhalla
[00:00] Boudicca Tomb Artifact Location
[00:42] Cassivellaunus Tomb Artifact Location
[00:56] Venutius Tomb Artifact Location
[02:55] Verica's Tomb Artifact Location
[04:16] Togodomnus Tomb Artifact Location
NOTE: LoliTails posted in the video's comments section:the one in the cassivellaunus tomb has been moved to a bit of rock just above the pool of water at the bottom of the waterfall
Boudicca Tomb Puzzle GuideCassivellaunus Tomb Puzzle GuideVenutius Tomb Puzzle GuideVerica's Tomb Puzzle GuideTogodomnus Tomb Puzzle GuideManius's Sanctum Puzzle GuideEden Prime Station:
Time stamps:
[00:00] Eden Ring Station Puzzle Guide
[00:38] Laser Beam Puzzle Door 1
[08:56] Laser Beam Puzzle Door 2
[18:33] Laser Beam Puzzle Door 3
[28:53] Laser Beam Puzzle Door 4
None of the videos are mine.
Text walkthrough with just artifact locations:
https://gamingdope.com/where-is-the-final-entrance-of-tombs-...Thanks to
Dmbledore for pointing out my guide had errors.