The last time Newberry Volcano blew its top was about 13 centuries ago. The north end of the monument has several large basalt flows, as well as the 500-foot Lava Butte cinder cone—a coal-black, symmetrical mound thrust from the depths 7,000 years ago. The cone is now home to the Lava Lands Visitor Center, which features interpretive exhibits covering the volcanic and early human history of the area. Lava River Cave, a 1-mile-long lava tube, takes
about 90 minutes to explore on your own with a lantern (available for rent, $5). On the south end of the monument, Paulina Peak, on an unpaved road, has the best view into the caldera. Along the shores of Paulina Lake and East Lake, you can hike, fish, camp, or stay at the rustic resorts.