Desert guardian
(Book)

"A moonshing hermit. A campus bookworm. A midnight murder. Can an unlikely duo and a whitewater crew save themselves and an ancient Aztec battlefield from deadly looters? Ethan's world turned upside-down when he slips off the edge of red-rock cliffs into a world of twisting ravines and coveted artifacts. Saved by a mysterious desert recluse named Relic, Ethan must join a whitewater rafting group and make his way back to civilization. But someone in the gorge is killing to protect their illegal dig for ancient treasures. When Anya, the lead whitewater guide, is attacked, he must divert the killer into the dark canyon night, but him most deadly pursuer is not who he thinks. Ethan struggles to save his new friends, face his own mortality, and unravel the chilling murders. But when the flee the secluded canyon, a lethal hunter is hot on their trail." --back cover