I'm sure the Russian military gave a perfectly good explanation for firing shells at this North Ossessia mountaintop, dislodging an awesome torrent of snow. Probably something to do with a controlled avalanche being preferable to nature's own, etc. But let's be honest; if you were in the Russian military, stationed out in the mountains, you'd be blowing random stuff up every other hour just to stay entertained.
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Looks like a big electrical arc from those towers at 1:18 ... not good.