STEPHEN & DONNA O'MEARA / SCIENCE PHOTO LIBRARY STEPHEN & DONNA O'MEARA / SCIENCE PHOTO LIBRARY
Lava lake. Molten lava inside a volcanic vent on the floor of a cinder cone. This is Puu Oo, an active cinder cone located in the eastern rift zone of the Kilauea volcano in Hawaii, USA. Photographed in November 2005.
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