The sonar readings were impossible. Lieutenant Maya Chen stared at the screen, watching the outline of a city appear beneath her destroyer—towers, domes, streets laid out in perfect grids.
“That’s not a natural formation,” her ensign said.
Maya ordered a drone deployed. The images took her breath away—an ancient city, preserved under a glass-like dome, its buildings intact, its streets empty.
“Any signs of life?” she asked.
“No. Wait—there’s a light.”
A figure emerged from one of the buildings—a woman in a silver suit, swimming toward the drone. She placed her hand on the glass