2 New Holes Mysteriously Appear in Siberia

More holes are discovered in Siberia, leaving scientist puzzled 

Strange holes appear in the Siberian permafrost that are both nearly 15 meters in diameter. The second hole was found approximately 100 kilometers from the first. The holes both are reported to have piles of dirt around them surrounding the perimeter. Indicating an explosion or excavation.

Scientists have yet to confirm the strange phenomena and what is causing it. “According to local residents, the hole formed on 27 September 2013,” Lapsui told the Times. “Observers give several versions. According to the first, initially at the place was smoking, and then there was a bright flash. In the second version, a celestial body fell there.”

 Okay readers let's pick your brain a little. I know I am going to get a lot of responses on this but here it goes. What do you think caused these large and deep holes that are around 15 meters in diameter and 60 to 100 meters deep? Aliens? Meteors? Government experimentation? Tell us your theory in the comment section below.