Bethel Ridge (IMAGE) University of Washington Caption The top and bottom images both show Bethel Ridge in Washington state. The top image, taken in 1936, shows a mosaic forest. The darkest grey tones are mature, moist, mixed-conifer forests. In the bottom image, taken in 2012, the forest has become more uniform and dense following decades without fire. Credit National Archives and Records Administration/John Marshall Usage Restrictions Must include credit License Original 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.