Machu Picchu is often called the "Lost City of the Inca." Hidden by thick forest plants high in the Andes Mountains of South America, the Inca city lay abandoned for nearly 400 years. Find out more about this historic site in Machu Picchu. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with video, audio, weblinks, slide shows, activities, hands-on experiments, and much more.