Sunset Crater Volcano National Monument is located just north of Flagstaff, Arizona, off Highway 89.  The Visitor Center is open all year except December 25.  Visitor Center hours are 9 A.M. - 5 P.M.  MST  November - April and 8 A.M. - 5 P.M. MST May - October.  Monument admission fees are $5 per person, which are also good for entrance into Wupatki National Monument.  The monument was established in 1930 by President Herbert Hoover to protect its geologic formations.  Archeologists believe that the Sinagua culture occupied and farmed this area for centuries.  After the volcano erupted and the land was no longer farmable, they think the Sinaguans moved to Walnut Canyon or Wupatki.  Nineteenth-century explorers like John Wesley Powell marveled at the well-preserved pueblos and the stark but strangely beautiful volcanic landscape.  Legend has it that Powell named Sunset Crater for the red and yellow colors of its rim.  Camping is not permitted on the Volcano but Bonito Campground, operated by the Forest Service, is located across from the Visitor Center.  The campground is generally open from late May through mid-October.  There are no hookups.  For more information, visit their website at:  http://www.nps.gov/sucr/index.htm