TY - BOOK AU - Johnson,Aaron AU - Zimanski,Anne TI - Discovery in Great Sand Dunes National Park T2 - National park mystery series SN - 9780989711678 PY - 2022///] CY - [United States] PB - Aaron Johnson KW - Treasure hunting KW - Juvenile fiction KW - Grandfathers KW - Colorado KW - History KW - Great Sand Dunes National Park and Preserve (Colo.) KW - Detective and mystery fiction KW - lcgft KW - Historical fiction KW - Nature fiction N2 - "Before leaving on a two-month summer vacation, Jake Evans finds a gift from his deceased grandfather that will lead him on a scavenger hunt through ten of America's most rugged, wild, and beautiful national parks."--Page 4 of cover; After camping in Rocky Mountain National Park, Jake and his friends travel to the Great Sand Dunes in southern Colorado. Exploring the heart of the dunes, they stumble upon something both unexpected and dangerous. Through more twists and turns, Jake's friendships and integrity are tested by choices that will demand smarts and courage. The mystery unfolds as Jake, Amber, and Wes learn about survival skills, natural history, integrity, character, and friendship. Along the way, they discover they are not the only ones on this quest. An elusive shadow group is close on their heels ER -