We visited Sunset Crater National Monument on the way to Wupatki. The volcano erupted over 1,000 years ago, but the whole San Francisco Peaks area is considered active though you can see no sign of that as you walk along the paths.
In the photo below you can see a “squeeze up” in a fissure in the ground. Lava pushed up through the crack and dried as a fin-shaped rock. I love how trees have grown all over the volcano’s cinder cone. Life goes on even after all the destruction wrought by the volcano.