The Grand Canyon is known as one of the seven wonders of the natural world. Carved over millions of years by the Colorado River, the canyon is known for its astounding size and beauty. In 1919, a national park was created in Arizona to preserve the canyon and its unique wildlife. Grand Canyon National Park explores the park's history, wildlife, recreation opportunities, and conservation efforts. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.