Lunar Crater is the primary feature along the 24-mile long Lunar Crater National Back Country Byway. Lunar Crater is a maar volcano formed by violent steam eruptions resulting from magma encountering ground water. The crater is about three quarters of a mile in diameter and 400 feet deep. The crater walls expose multiple basalt flows and a rhyolite ash flow. The crater rim is made up of debris erupted from the crater by the steam explosions.
For more information on Lunar Crater see the following:
Geology of the Lunar Crater Volcanic Field, Nye County, Nevada - (
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Geologic Map of Lunar Crater 15’ Quad - (
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