Fire Scars (image) Southern Methodist University Share Print E-Mail Caption A tree ring shows the pattern of fire scars from 1700 to 1979. As is typical of tree rings, fire scars stop around 1900 due to a century of fire suppression. Credit Roos, Swetnam Usage Restrictions Please credit 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.