Journey into a volcano

Back in July, I told you about an crane system used to lower tourists into the now-empty lava tubes of an extinct volcano. Now, you can travel down into Iceland's Thrihnukagigur volcano yourself — via this fascinating video posted at the NOVA website. While you're probably not getting a view of Thrihnukagigur's magma chamber, you can see the massive tubes that brought that magma to the surface and stare, gawk-eyed, at the tiny scientists scrambling around inside them.
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