volcanic neck

noun

: a column of igneous rock that is formed by congelation of lava or the consolidation of volcanic breccia in the conduit of a volcano and that may later be left standing above the adjacent country by the removal of surrounding rocks by erosion

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“Volcanic neck.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanic%20neck. Accessed 4 Feb. 2023.

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