lava butte

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Also known as volcanic plugs or necks, lava buttes form when magma hardens within a vent of an active volcano. Erosion can remove the surrounding rock, leaving the erosion-resistant plug behind, producing a distinctive, upstanding landform.

Shiprock, New Mexico, is one example of a lava plug.

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"Shiprock, a volcanic plug, in San Juan County, New Mexico, July 14, 2014" by Sue B. is licensed under CC BY.

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