Struggle Down Under (Choose Your Own Adventure #20) by Shannon Gilligan

Struggle Down Under takes YOU on a thrilling adventure in the Australian outback. 9-12 year old readers will search for the mythical city of Satyrion, fly a mail plane through a lightning storm, discover gold, and escape a band of crooks. C

Your Uncle Gilroy has found an amulet that unlocks the mystery of an ancient civilization in the Australian desert and invites you to join the archaeological dig. But is he in danger? Do you accept help from a stranger claiming to work for your uncle? How will you plan to escape from your kidnappers? Was that UFO you saw real?