While backpacking in the desert, thirteen-year-old Mark falls into a tube of blue light and is transported into a more primitive world, where he must use his knowledge and skills to survive
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Mark's solo camping trip in the desert turns into a terrifying and thrilling odyssey when a mysterious beam of light transports him to another time on what appears to be another planet. As Mark searches for a pathway back to his own time on Earth, he must make a new life in a new world. His encounters with primitive tribes bring the joy of human bonds, but violence and war as well--and, finally, a contest in which he discovers his own startling powers.
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