- Located north of Flagstaff near Wupatki National Monument, this volcano last erupted in 1065, scattering ash and black cinder for miles around the area. Examine fascinating volcanic features such as squeeze-ups and hornitos. Hike along one-mile Lava Flow Trail and discover a variety of volcanic formations. Climb a nearby cinder cone on the Lennox Crater Trail and enjoy the astounding views.
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