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Rising 1500 feet above the surrounding terrain, this imposing volcanic plug, a diatreme of an unusual igneous rock called minette...
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Agathla Peak

Navajo Nation

Rising 1500 feet above the surrounding terrain, this imposing volcanic plug, a diatreme of an unusual igneous rock called minette, is one the most prominent in Navajo country. Photo © copyright by Robert Faucher.

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