The ground started vibrating at 3:47 PM desert time, which I knew because the HUD clock was one of the few things running without interference from the environmental systems.
I had been making reasonable progress across the Glass Wastes outer rim, Code Sight showing me the safe corridors between heat zones, Marcus's journal open in my memory like a second map overlaid on the first. The nomad camp's supplies had restored my resources to functional levels. I had been thinking about Fragment 3 and the route to Ironhold Keep and the specifics of the sequence Saetha had described.
I should have been thinking about the ground.
The vibration started subtle, a tremor that I registered first through my boots rather than any system alert, the specific quality of something large moving through san
