Sunset Crater Volcano National Monument

"Around AD 1064 a volcano erupted on this spot, spewing ash across 800 sq miles, spawning the Kana-A lava flow and forcing farmers to vacate lands tilled for 400 years." Full review

"Houses a seismograph and exhibits pertaining to volcanology. Across from the visitor center, the USFS-run Bonito Campground provides running water and restrooms, but no showers or hookups." Full review

"Around 900 years ago, a volcano – which has come to be called Sunset Crater – erupted and transformed the encircling area." Full review

"On a visit to Sunset Crater Volcano National Monument, you can walk the accessible mile-long Lava Flow Trail at the base of the volcano to check out the interesting geologic features the eruption left"

"Dotting the landscape northeast of Flagstaff are more than 400 volcanic craters, of which Sunset Crater Volcano is the youngest." Full review