House of Sky and Breath (Crescent City, #2)

by Sarah J. Maas

The city-ship began sailing along the floor of the canyon, the seabed unusually flat and broad between the towering cliffs. They passed a half-crumbling pillar, and— “Are those carvings?” Ruhn asked as Sendes led them back down the hall. “Yes,” she said a shade softly. “From long, long ago.” Tharion said, “What was down here?” He scanned the passing walls of the canyon floor—all of them carved with strange symbols. “This was a highway. Not as you will find above the surface, but a grand avenue the mer once used to swim between great cities.” “I never heard of anything out here.” “It’s from long ago,” she said again, a bit tightly. Like it was a secret. Bryce said from the back, “I used to work in an antiquities gallery, and my boss once brought in a statue from a sunken city. I always thought she was fudging the dates, but she said it was almost fifteen thousand years old. That it came from the original Beneath.” As old as the Asteri—or at least their arrival in Midgard.