I followed the corridor into the installation’s central hub. It was a large domed area, dark except for the fading markers on the ground. There were no human remains, of course, but debris was scattered around, tools, broken slivers of plastic, a chunk of hauler bot arm. Openings to corridors, like dark caves, branched off in all directions. I had no sense of having been here before, no sense of familiarity. I identified the passages that led toward the mine pit, then the corridors that went toward the quar ters and offices. Branching off from that was the equipment storage.