$2 · The Worm Tunnel (Finnegan Zwake #2) by Michael Dahl

Excellent Condition Finnegan, his uncle Stoppard, and their friend Jared are off to an archeological dig in Aguilar, land of giant cacti, jungles, and dinosaurs. Dead ones, that is. While Finn and his uncle are digging up treasure, the crew is digging up very valuable dinosaur egg. But digging too deeply can stir up trouble, not to mention a murder, or two, or three...