fire through years (IMAGE) Penn State Caption Repeat photographs of the same location within Lassen Volcanic National Park showing increases in tree density in a Jeffrey pine-white fir stand that burned at high severity during the Reading Fire in 2012. Credit A.E. Weislander, U.S. Forest Service / Alan H. Taylor, Penn State Usage Restrictions non commercial use only 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.