Sunset Crater volcano
National Monument

Sunset Crater Volcano National Monument is located on a loop road that also leads to Wupatki National Monument. Volcanism, tectonics, and erosion have created unique geological formations with dramatic changes in elevation and climate. The dominant features are a 1,000 foot volcanic cone and its lava flow. Sunset Crater Volcano National Monument was crated in 1930 by proclamation from President Herbert Hoover.

Sunset Crater is a cinder cone. Cinder cones are formed during early explosive stages of an eruption. Magma, a mixture of molten rock and highly compressed gases, rises upwards from underground.  As the magma goes upwards the pressure drops and the gases are released. The high percent of gas in magma causes an explosion out of the central vent, creating a mound or cone. Magma with a lower gas content produce lava flows that may escape from the side or base of the cone.

	Lava Tube Pictures

This Area is Still Experiencing Seismic Activity

Volcanic Models

Volcanic Rocks Found in the Area

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Last Updated February 2005