Join Metro naturalist Ashley Conley and explore the rugged beauty of this unique lava dome as you wander through a white oak woodland in summer. Participants gain a basic understanding of geology in the region from the stories in the stones and land formations along the way. Trails are rough and steep in places. Suitable for ages 8 and older. $5 per person. Advance registration required; call North Clackamas Parks and Recreation at 503-794-8092.