The San Francisco Volcanic Field of Northern Arizona
Including SP Crater, Colton Crater, Merriam Crater, Medicine Valley, Black
Bottom Crater, Walker Lake, Red Mt., the Cinder Hills and other places
The San Francisco Volcanic Field of northern Arizona includes around 600 dormant or
extinct volcanos. In the greater Flagstaff region, ancient volcanic activity produced such
large, well-known mountains as the San Francisco Peaks, Kendrick Mountain and
of course Sunset Crater. However, many lesser-known volcanos, or cinder cones as
they're often called, are also worth seeing, a handful of which are shown on this page.

A juniper tree near SP Crater, a cinder cone (dormant volcano) north of Flagstaff, Arizona   A juniper tree near Colton Crater, a cinder cone (volcano) in northern Arizona   Juniper with wildflowers in the Cinder Basin (southwest of Merriam Crater).   Rocky Mt. Bee Plants in northern Arizona's Cinder Basin with the San Francisco Peaks in the distance (late twilight with flash).   Rocky Mt. Bee Plants beneath SP Crater, a cinder cone in northern Arizona.

  A juniper tree near Colton Crater, a cinder cone (volcano) in northern Arizona   Wild sunflowers with Merriam Crater in the background, northern Arizona.   Red Mt., a cinder cone (ancient volcano) northwest of Flagstaff, Arizona   Juniper tree surrounded by Goldeneye flowers in the Cinder Basin, Arizona.

Winter at SP Crater, a cinder cone (dormant volcano) in northern Arizona.   Winter at SP Crater, a cinder cone (dormant volcano) in northern Arizona.   At the rim of Black Bottom Crater, a cinder cone in northern Arizona.   Full moon rising behind a juniper tree about 25 miles north of Flagstaff, Arizona   Red Mt., a cinder cone (ancient volcano) northwest of Flagstaff, Arizona

        Pine trees and grass near the top of Sunset Crater, northern Arizona   Looking into Colton Crater, a cinder cone (volcano) in northern Arizona   Looking into Colton Crater, a cinder cone (volcano) in northern Arizona
  Rocky Mt. Bee Plants beneath SP Crater, a cinder cone (dormant volcano) in northern Arizona        

  A juniper tree near SP Crater, a cinder cone (dormant volcano) in northern Arizona     Colton Crater, a cinder cone (volcano) in nothern Arizona. In the distance are the San Francisco Peaks.    

    Pronhorn "antelope" at the base of Merriam Crater, northern Arizona (not for sale).     Wildflowers in the Cinder Basin with the San Francisco Peaks in the distance.  


Drone Photos
I have climbed to the rims of both SP and Colton Craters
with a regular camera. However, to fully appreciate these cinder
cones and get a true sense that they are in fact ancient volcanos
you must get an aerial perspective. Fortunately, a friend
lent me a very nice drone so I was able to do just that.

    Drone photo of Arizona's SP Crater with a black basalt lava flow extenting more than four miles from the ancient volcano.   Drone photo looking into the cone of SP Crater, an ancient volcano in northern Arizona.   Drone photo of Colton Crater, an ancient volcano in northern Arizona, with the San Francisco Peaks in the distance.    



Crappy Videos
Unlike my photography, I put little effort into making videos. I'm usually too
busy figuring out how to capture good still images to worry about things like light,
composition or even steadiness for videos. However, I'm posting these videos anyway
because they show what it looks like if you're standing at the rim of an ancient volcano,
looking down into the cone. Yes, these are basically just videos peering into giant holes,
but if you're into volcanos and wondering which ones might be interesting to climb,
perhaps these can help you decide. After clicking on the name of a cinder
cone you may have to wait a moment for the video to load and play.

Black Bottom Crater

Medicine Valley, South side of drainage

Medicine Valley, North side of drainage

Merriam Crater






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