Tear-dropped shape 'bocca,' or mouth, of lava tube
A tear-dropped shape "bocca," or mouth, of a lava tube that was feeding a large, channelized lava flow in the Leningradskoye lava field during the 2012-2013 Tolbachik eruption, which began Nov. 27, 2012, after 36 years of inactivity.
Ben Edwards, a professor of Earth sciences at Dickinson College in Carlisle, Pennsylvania, was funded by the National Science Foundation (NSF) through a RAPID (Grant for Rapid Response Research) grant (EAR 1321648) to study lava-snow interactions and their eruptive products of Tolbachik. (Date image taken: January 2013; date originally posted to NSF Multimedia Gallery: May 30, 2019)
Credit: Benjamin R. Edwards
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