![]() ![]() These underground passageways, also known as pyroducts, are created by lava flows themselves and are capable of transporting great quantities of lava long distances underneath the surface. Judd)Īs islands created by volcanoes, Hawaiʻi is criss-crossed by countless lava tubes. A peek through a "skylight" into the interior of an active lava tube (USGS Photo/J.
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