This is our runner up for favorite science photo of 2014. Look out for our favorite photo tomorrow! After large, mysterious holes popped up throughout Siberia this year, Russian scientists were sent to investigate. One of the earliest theories behind the craters was that thawing permafrost is behind the phenomenon, but it's hard to say. (Image Credit: Vladimir Pushkarev / Russian Centre of Arctic Exploration) #science #siberia #russia #arctic #permafrost #snow #exploration #russian #craters #scientists #nature #frost #adventure #photography #siberian #tundra #ice