It all started with water. But how did one river make such a deep canyon? Read on and find out.

• ISBN: 9780689869464
• Author: Bauer, Marion Dane
• Published: 2006 , Aladdin
• Themes: Beginning reader, Earth science, Geography, geology
• Descriptors: Early Years (ages 2-6), Information Book, Nonfiction, Picture Book, Southwest, United States
• No. of pages: 32