Chaco Canyon (1 of 3) (IMAGE) University of Cincinnati Caption University of Cincinnati geography professor Nicholas Dunning and UC research associate Samantha Fladd talk about a core sample taken from Chaco Canyon, N.M. Credit Joseph Fuqua II/UC Creative Services Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.