The last time hot lava flowed from Newberry Volcano 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 and scorched-red, 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 that explain 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, $4-$6). On the south end of the monument, an unpaved road leads to beautiful views from Paulina Peak. Along the shores of Paulina Lake and East Lake, you can hike, fish, camp, or stay at the rustic resorts. The monument offers 100 miles of summer trails, and may be accessible during winter months, depending on snowmelt, for snowmobiling, snowshoeing, and skiing.