Relic of the Future: Chapter 151

Jaune nudged Cinder with his elbow and nodded to the central oasis, which was ringed with stone blocks to give it the appearance of an open well. The water looked crystal clear and a good ten metres deep. "That's it," he whispered. "The crack is down by the bottom. There's an air pocket inside. You have the tank I gave you?"

Cinder nodded and patted her side. There was a brown bag on her hip, within which lay a very small oxygen tank and breather. She shouldn't need it but the extra minute or so's air it contained would keep her from worrying he was trying to get her killed.

—Relic of the Future: Chapter 151