Galloping glacier
 

Galloping glaciers are when glaciers break free of their average slow inchs or feet per year movement and move many time that in a single day.

Check this out.

"The largest glacier in the former USSR, the Fedchenko, normally moves about fifty yards per year, averaging five inches per day. Even that advance is relatively rapid for a glacier. Just a few years ago it unexpectedly surged and galloped at over fifty yards per day! This incredible pace continued for several weeks. Inhabitants of several villages had to flee from its path as the ice mass surged over their homes."

What a suprise for the Far North Survivalist.

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