Blistering action, cliff-hanging suspense, unexplained mysteries. The story begins with four children's first summer visit to their Grandparents secluded, sometimes mysterious, farm on Thunder Mountain. After a terrible storm one night, an ancient log is moved exposing an opening in the ground with an eerie red fog escaping ... exactly where their zip-line ends as it crosses a mist shrouded creek. What could happen if they accidentally fell in? Could they be lost forever - or worse? This is full of adventure for children and the young at heart. You'll experience bravery, humor, history, survival tactics and the importance of drawing on individual strengths - in order to survive. There is a focus on appreciation for home, family and the needs of others.