At prehistoric sites in the "Four Corners" states (Colorado, Utah, Arizona, New Mexico) of the American Southwest, archaeologists have searched for years, looking for clues to the history of the Pueblo people. Learn what we know about these cliff dwellers. Study the thousands of rock carvings--petroglyphs--they left behind. Discover how modern scientists use ancient artifacts to learn about the lives of these early Americans. National Geographic supports K-12 educators with ELA Common Core Resources. Visit www.natgeoed.org/commoncore for more information.