Study Site (IMAGE) Penn State Caption This shows Denlinger's Mill study site. Located on the West Branch of the Little Conestoga Creek in Lancaster County, PA. Arrow indicates dark paleo-wetland soil layer containing fossil leaf deposits, with four plus meters of historical sediment buildup on top. Credit 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.