Adventure in Grand Canyon National Park Environmental Conservation & Protection With the help of his

With the help of his third-grade cousin

she and her assistant

They enlist Robert Grim

Gregory must risk everything to ensure that when it comes time to kiss the bride

Adventure in Grand Canyon National Park Environmental Conservation & Protection With the help of hisNational Park Mystery, Book #3 Before Jake's grandfather died, he was on the trail of a centuries old mystery. He has entrusted that mystery to Jake, leaving behind a set of hidden codes, riddles, maps, and other clues that lead Jake and his friends on a scavenger hunt while camping in the most rugged wilderness of the national parks. Follow the clues to real locations on a quest to solve an ancient mystery. The scavenger hunt takes Jake and his