This clip is of the spectacular South American glacier, Perito Moreno Glacier. It is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system Argerntina shares with Chile. It is the world's third largest reserve of fresh water.
There are photographers from the four corners of the earth that come to southern Argentina and literally camp out at the glacier site in order to get the actual breakup on film.
After watching this clip, check out some of the other videos posted on YouTube and you will see the arch has completely disappeared.
The music by Enya is a nice background sound.
To learn a little more about the glacier, check out the Wikipedia entry.
