Ever wondered why the Coyote Hills rise up out of the surrounding marshland? Take a walk with Dr. Malcolm Pringle around the hills of the refuge. Observe rocks that formed deep in the ocean during the time of the dinosaurs. Ponder how they could have joined North America then been uplifted to form the rocks colors and soils that provide the footing of the varied plants and animals that we see now. Sturdy walking shoes recommended. Register at https://donedwardsgeology.eventbrite.com.