"Journey To The Bottom of The Siberian Holes in Yamal"

PRI's The World has more of the ongoing investigations and more insights from the Permafrost Lab's Prof. Vladimir Romanovsky on a possible explanation of the new found holes formation mechanism. "Scientists are trying to get to the bottom of those mysterious new holes in Siberia": http://www.pri.org/stories/2014-07-30/huge-mysterious-holes-emerge-russi....