National Monument Chaco canyon shows the largest discovery through the

The national park Chaco canyon, are old structures clearly recognized by humanity as they belonged to indigenous groups that were identified as ruins that have been rebuilt by the Anasazi, name provided to the tribes and indicates old enemy.
The Anasazi populated the Chaco canyon between 800 and 1150, Chaco canyon is situated northwest of New Mexico between Albuquerque and Farmington, these ruins were declared a Planet Heritage Web site by Unesco on December eight, 1987.

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