Camp Fire of Prehistoric Pueblo Construction Stones (image) University of Cincinnati Share Print E-Mail Caption Camp fires built in Kaibob National Forest routinely make use of stones once used for prehistoric pueblo construction. Exposure to the fire's heat makes chemical analysis and carbon dating difficult. Credit Ryan Washam Usage Restrictions None Share Print E-Mail 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.