Cool blue light poured through the bulging, concave windows. Lindsay glanced through the metaglass briefly, saw a rocky cavern half full of water. An observation sphere the size of a house was anchored to the cavern’s ceiling. Beside it was a bank of blue spotlights, mounted across the ceiling on arching rails. Lindsay set his boots into the stirrups of a low-grav chair. The seat warmed beneath him; its padded saddle was wired with heating elements.