Burn Scar in Mature Tree (IMAGE) University of Exeter Caption This burn scar in a mature tree was caused by understory fire as evidence of fire leakage from surrounding farms into the edge of an Amazonian forest in Mato Grosso state, southeast Amazonia. Credit University of Exeter 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.