Lenox Crater, Cinder cone in Coconino County, United States.

Lenox Crater is a cinder cone in the San Francisco Volcanic Field, about 2,166 meters above sea level in Coconino County near Flagstaff, Arizona. Its slopes are covered with reddish volcanic rock and dark cinders thrown out during the eruption that formed it.

The cinder cone formed roughly 1,000 years ago when a volcanic eruption scattered ash and rock fragments across the region. This eruption was one of many events that shaped the San Francisco Volcanic Field over centuries.

The crater stands as a natural laboratory for geologists and researchers studying volcanic formations within the Colorado Plateau region.

Lenox Crater lies in Coconino County near Flagstaff, within the San Francisco Volcanic Field, and its summit stands at 2,166 metres. The surrounding terrain is mostly mountainous to the north and flatter to the south, with Humphreys Peak about 13.5 km to the east. No town lies close by, so bring your own water and supplies.

Lenox Crater sits at 2,166 metres above sea level, and its lava flow ran close to the base of Sunset Crater. Humphreys Peak, the highest point in Arizona at 3,829 metres, lies about 13.5 km to the east. The surrounding terrain is mostly grassland with no town nearby.