内容简介：
A backpacking trip on the Appalachian Trail may not sound like an enjoyable family vacation. But for the Lawrence family, hiking hundreds of miles on the AT proves to be an exciting, unforgettable, fun filled adventure. Twelve-year-old Justin gains valuable lessons in "Nature's Classroom," while meeting the physical and emotional challenges of the hike. Together the family encounters storms, uninvited nighttime visitors, wild creatures, a variety of other hikers, and even an Appalachian Trail thief. Find out how Justin and his six-year-old sister Emma, find clues that lead them on a treasure hunt along the Appalachian Trail.