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Adventure-Mystery This book is the story of a young 15 year old adventurer, Robin Bolt . A tale of mystery and adventure set in Central and South America. Travel across the jungles and plains in a quest to discover hidden treasures and solve the riddles of the numbered map. On what starts out as a routine family vacation, Robin and family follow a clue and are diverted to a search for lost worlds. Eventually they stumble onto a lost civilization and learn that the planet itself is in peril. It is up to them to save the Earth.