Twin brother and sister, James and Morgan, go on an adventurous camping and hiking vacation with their parents to Bryce Canyon and Zion national parks and learn about the history, unusual geology, famous sites, plants, and animals of these two closely situated but very different parks. Accompanying sidebar notes include additional facts about the area and describe the facilities and rules of the two parks.Twin brother and sister, James and Morgan, go on an adventurous camping and hiking vacation with their parents to Bryce Canyon and Zion national parks and learn about the history, geology, famous sites, plants, and animals of these parks.