Thanks for the hint! It helped! Yeah, I didn't pay much attention to the Journal. Managed to find one on local planet, entered it, then there was a new entry in the journal where I had to click an icon and after that the pyramids appeared....

No one reading this forum? I thought it's an easy question....

I need a little hint. I see in YouTube videos of walkthroughs some pyramids on planets and some ancient alien technologies but I don't see any of those in my game. I'm playing Factorio + SE and a bunch of other mods and I'm between DSS3 and DSS4, late game I guess. Are this buildings part of another ...