Yet Another Mystery Sinkhole: 'They got lucky not to fall into it!' [DAHBOO7]

http://www.undergroundworldnews.com
They are starting to pop up all over Siberia. Some have also been discovered within the past year in Russia. It is still a mystery still to exactly what causes these sinkhole type crater formations!

http://abcnews.go.com/International/photos/incredible-sinkholes-world-18...



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