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...

It was 1964 in the brand-new state of Alaska, a vast land of staggering beauty and heart-stopping dangers. Eleven-year-old Jack had grown up living happily with his parents in an off-the-grid cabin, miles from their closest neighbors. Grizzlies and wolves outnumbered people, and dark winter days were 30 degrees below zero. Jack had always thought of himself as strong--"Alaska tough". But then the most powerful earthquake in American history--the Good...