Nanite Crystal Lattices

Detailed analysis of the enormous metallic crystals dominating …'s landscape have defied all expectations. Science Officer … is excited to reveal that these oversized crystals are in fact composed of trillions upon trillions of deactivated nanites! Their molecular structure matches no known empire's nanotechnology signatures, making their point of origin indeterminable. They may have been deposited on the planet by some unknown spacefarers for an unknown purpose. As far as … can tell, the nanites compiled themselves into perfectly oriented crystalline lattices and replicated until a point at which they became deactivated. While the crystals they created do in fact resemble buildings, they are entirely uniform in composition, and cannot possibly have served any such purpose.

The command below will trigger the "Nanite Crystal Lattices" event in Stellaris:

When this event fires, you can choose between these 2 options:

• Incredible.
  • Engineering: +None to None
  • +200 Nanites
• Disconcerting.
  • Engineering: +None to None
  • Society: +None to None

Stellaris events fire in chains — one event leads to the next. Here is how Nanite Crystal Lattices (distar.275) connects.