lava tube

/ˈlavə tjub/ (say 'lahvuh tyoohb)

noun
a natural conduit in a volcano through which a lava flow travels before being expelled; forming a long channel once the rock has cooled.

Australian English dictionary. 2014.

Look at other dictionaries:

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  • lava tube — …   Useful english dictionary

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  • lava cave —    , lava tube    1. A cave that formed in a partly cooled, broadly basaltic or phonolitic lava, not by erosion but by molten material flowing away. In most cases, an initial active lava conduit is formed when a flowing surface lava stream has a… …   Lexicon of Cave and Karst Terminology

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