Join Geologist Ken Ashton and learn about rocks, minerals and fossils during the evening presentation. FREE. It's outdoors at the amphitheater! As residents of the third rock from the sun, learn about earth geology. 8:00 p.m. (A geology hike is scheduled in the morning on August 5. Join us as we Rock on! ) Open to the public. There is no charge to attend the Geology Rocks! programs.