Local geologist, Jeri Jones, will be sharing local fossils, dinosaur footprints, and teaching you how to pan for gold on Sunday July 14 at The Wallace-Cross Mill Historic Site from 1:30-4:30pm The Mill will also be open for general tours. This event is free and does not require registration. The restored 1826 Grist Mill is located at 15759 Cross Mill Road, Felton, Pa 17322.