A massive landslide, sending rocks and boulders rolling for over five miles, may have been the largest ever on the contninent in recent times. The slide registered as a 3.4 magnitude earthquake and may be due to the melting permafrost in the mountains. Take a look.
http://usnews.msnbc.msn.com/_news/2012/07/13/12722446-5-mile-long-landslide-in-alaska-national-park-warming-eyed-as-possible-culprit?lite
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