Anthropologists from the United States concluded that the premise of the crisis of the ancient civilization in Chaco Canyon is not anthropogenic, as was listed previously, and other reasons.

The results of own research scientists published in the journal PNAS, but briefly they can be found on the website of the University of new Mexico.

The researchers found no conclusive evidence that in the past - during your stay ancient Redskins - on lands near Chaco-Canyon was attended by forests. Own conclusions researchers found that progressive arguments about the existence of a pine forest in the area of the plain easy to debunk.

For example, isotopic analysis failed to shed light on the origin of wood that had been found during archaeological excavations. That means it is absolutely not necessary that she could be grown in a specific proximity Chuck-Canyon. Anthropologists report that all modern arguments for the existence of forests on these lands do not withstand criticism.

So, the famous version that global deforestation led to the depopulation of the Indians, turns out to be incorrect. Among other things researchers did not find any other traces of human activities, which could serve as a prerequisite of the decline of the ancient culture of the Indians of the area.

Professionals report that they do not understand the circumstances of the disappearance of civilization in Chaco Canyon. Anthropologists leaves open questions about the origin of wood in the canyon, about the sources of water in it, the possibility of agriculture in the region and its associated irrigation system.

Red living in Chaco Canyon on the ground of good new Mexico, was considered to be the followers of the Anasazi culture, which flourished in the IX-XII century ad. Then on the area the red stone building, which remained the largest pre-Columbian North America. But by the XIII century the red militia began to leave their houses.

Usually depopulation in Chaco Canyon, the base of which was listed as the deforestation of the area in consequence of work is given as a model for the negative results of people's actions on the environment. A new study by the South American scientists do not find evidence that deforestation has caused the Exodus of the old civilization in these places. And yet, the question about the cause of depopulation old Indian scientists leave it open.
sections: Society, World News