Join Deschutes Land Trust and Daniele McKay for a geology hike at Aspen Hollow Preserve. You'll start at the tope of the canyon with views of the Three Sisters and learn about the volcanic forces that formed Central Oregon. Then hike down into the canyon formed by Whychus Creek and check out some amazing columnar basalt cliffs that are also home to nesting golden eagles. This is a moderate 2 mile hike. Regostratopm is required.