PERITO MORENO GLACIER,
the only one moving forward, offers a unique show when it
breaks. Many of us have heard of such an event, but, how does
it happen? The glacial is an ice river coming down from the
mountains along approximately 21.7 miles. Its front is 2.5
miles wide and its average height is 197 feet. This huge glacial,
occasionally, is wider than the Channel, moving on top of
the Magallanes Peninsula and therefore obstructing the normal
water circulation from one side to the other. So the water
on both sides begins to unbalance in such a way that the southern
side is about 32.8 feet higher than the other side. The pressure
then forms cracks on the glacial with water filtrations that
break the ice and form a tunnel. Once the tunnel gets to the
northern side, the water begins to level again and the final
process starts. The top of the tunnel gets weaker every minute
and chunks of ice get detached, almost constantly, until it
ends with the major break that thousands of people have been
lucky enough to witness.
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