Lava Carbuncle - an ancient intrusion of tough, hard rock in southwestern Africa. Quite likely also Namibia. (Photo by Chris Hadfield/Twitter)... more 
Lava Carbuncle - an ancient intrusion of tough, hard rock in southwestern Africa. Quite likely also Namibia. (Photo by Chris Hadfield/Twitter) less 
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Mon, Jan 14, 2013 11:00 AM EST