A Volcanic Labyrinth

See the only place on the Earth where scientists can study a volcano from the inside.
Publish Date: Topic: Planet EarthPlanet EarthNova
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Thrihnukagigur crater is the only place on Earth where the anatomy of a volcano can be studied from the inside. When geologists journeyed into its heart, they discovered that a network of fissures links together distant volcanoes.

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Additional funding for this program is provided by Millicent Bell, through the Millicent and Eugene Bell Foundation.

Major funding for NOVA is provided by the David H. Koch Fund for Science, the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.