Cinder cone of the Sunset Crater Volcano

Sunset at Sunset Crater Volcano National Monument, Flagstaff, Arizona, USA

Nightfall at Sunset Crater Volcano National Monument

Darkness is creeping up the slopes of the Sunset Crater Volcano cinder cone

Sunset at Sunset Crater Volcano

Sunset at Sunset Crater Volcano National Monument, Flagstaff, Arizona, USA

Large fissure at Sunset Crater Volcano

Large lava fissure at Sunset Crater Volcano near Flagstaff, Arizona, USA

Sunset at Sunset Crater Volcano

The cinder cone of the Sunset Crater Volcano glows in the late afternoon sunlight

San Francisco Peaks

The San Francisco Mountains near Flagstaff, Arizona, rise up to 12,633 feet to form the highest point in Arizona

Bonita Lava Flow at Sunset Crater

Bonita Lava Flow of the Sunset Crater near Flagstaff, Arizona

Bonita Lava Flow at Sunset Crater Volcano

Pine trees, small bushes and lichen slowly but surely overgrow the lava of the Bonita Lava Flow at Sunset Crater Volcano National Monument near Flagstaff, Arizona

Lava Lake

Black lava lake of the Bonita Lava Flow at Sunset Crater Volcano National Monument

Sunset Crater Volcano National Monument

Black lava lake of the Bonita Lava Flow at Sunset Crater Volcano National Monument

Sunset Crater Volcano National Monument

The cinder cone of the Sunset Volcano as seen from the Cinder Hills Overlook at the Sunset Crater Volcano National Monument near Flagstaff, Arizona, USA

Sunset Crater Volcano National Monument

A black lava cinder cone in Sunset Crater Volcano National Monument, Arizona, USA

Sunset Crater Volcano National Monument

The cinder cone of the Sunset Volcano in Sunset Crater Volcano National Monument near Flagstaff, Arizona, USA