Jack picked up the pace a little after the terrain flattened out, but then suddenly slowed down. “What’s wrong?” Will asked when he noticed that Jack was lagging behind. “You need a break?” he teased. “Do you hear that?” Jack asked as he ground to a halt. Will stopped beside Jack and listened. “Sounds like running water.” “It sounds like a lot of running water,” Jack corrected, remembering the sound of the first river they had taken water samples from.
