Can anyone explain how this ice column erupted out of the farmland alongside U.S. Highway 89 in Afton, WY? On the way to Jackson today, I saw three of them. This one was the largest, and spouting a bit of spray out of the top every now and again. Usually, I can engage in some fool speculation leading to a hazarded guess, but this one has me completely at a loss.
Entertaining guesses also encouraged, but please keep it safe for work reading. And if you actually know something about this, how long will it be before it melts?