Concept for a fully functional Uryagan Isle.
There were three in total, but only one significantly survived the impact into Ahgmahdon after the sudden gravitational pull into the planets surface. The Isles remain the most technologically advanced creations ever built by humanity, the ships themselves being almost the same size as Earth and the life-bearing globes within the shell being almost the same size as Mars.
The ships are outfitted with complex mechanical systems, some which are kilometers long whilst others are nanoscale. The lengths of the legs are outfitted with relativistic gravity rods, and the inner life-bearing globe is suspended within the "terrarium" by use of a somewhat experimental magnetic gravity latch.
The dark "night" underside of the Isles contain the organs and brains of the main structure. At the underside epicenter resides the interstellar thruster limbs, much smaller than the locomotion limbs which were sadly never used as intended.
Uryagan Isles were the closest structures mankind ever built that housed the closest thing to an Intelligent Artificial Intelligences. Since the crash, the surviving Isle's central intelligence fragmented itself as it engaged life support mode, but has since adapted and sits at the center of the Shimmering Crash Site.
On the surviving Isle's life-bearing globe, life goes on. There was one catastrophic war, one equally catastrophic apocalypse, but life goes on.
