Can Tree Rings Explain the Demise of a Lost Civilization?

Name: Can Tree Rings Explain the Demise of a Lost Civilization?
Uploaded: 2018-05-15T20:35:42Z
Duration: 2 min 13 s
Description: Archaeologists believe the sudden destruction of a pre-Columbian civilization found in southern Illinois occurred around 1150 AD. But to find the cause of such upheaval, they look to the surrounding trees.

From:America's Lost Pyramid

2m 13s
HD
TV-PG

Archaeologists believe the sudden destruction of a pre-Columbian civilization found in southern Illinois occurred around 1150 AD. But to find the cause of such upheaval, they look to the surrounding trees.