Have you ever seen rocks that are more than two billion years old? Get ready to visit the Grand Canyon! Millions of people travel to Arizona to visit this amazing place each year. But just how big is the Grand Canyon? And how was it made? Read this book to find out!
(retrieved from Amazon Thu, 12 Mar 2015 18:20:31 -0400)
Discusses the physical features and origins of the Grand Canyon, covering its depth and length, how it was formed by the Colorado River, and its appeal to millions of tourists every year.