I do not have an opinion on the most interesting glacier on the planet but I do have one on the most interesting glacier that I have seen. That is the Hubbard glacier in Alaska. It's interesting simply because it is so overwhelmingly huge to see in person. The other glaciers that I saw in Alaska were much smaller. Most are shrinking dramatically, although one of the shorter ones is still maintaining itself through snowfall. A fascinating feature of all the glaciers that I saw there was the blue ice, which takes a lot of time and pressure to develop.
Source(s):
http://en.wikipedia.org/wiki/Hubbard_Glacier
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Ohh... that's a tough one. I grew up around the Columbia ice field and used to climb onto it from all directions, so I have a strong sentiment for that one, but... I gotta admit... the Greenland Ice sheet is just too cool:

http://photos.mongabay.com/06/1214glacier.jpg

http://www.divinecaroline.com/ext/article_images/greenlandice.jpg

http://origin.arstechnica.com/journals/science.media/greenland_glacier.jpg

http://www.terradaily.com/images/melting-water-glacier-greenland-bg.jpg

It's melting too fast.

http://www.mnforsustain.org/images/climate_greenland-seasonal-surface-melt_1992-2002.jpg
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The Tasman glacier in New Zealand ( the largest glacier in NZ )

I took one of the tours with my father and we landed on the glacier. AMAZING STUFF!!!! I don't have photos on the computer to show you.....

It was the last trip I had with Dad and it was the first time I'd ever seen a glacier.

You fly around then land, its a wonderful trip if you are ever in NZ

http://www.skiplanes.co.nz/Flights/Aoraki-Mt-Cook-Flights/Ski-Plane-Flights.asp

Not my photo but that's exactly what it looked like :)
Photo by Neville10 @Flickr
http://www.flickr.com/photos/42198161@N02/3915732425/
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http://www.gaypatagonia.com/images/perito_moreno_glacier.jpg

Because this Patagonian ice belt is regarded as the most famous Glacier in the World, your video shows the last of Perito Moreno´s ruptures which occurred in July 2008 ...and then why it is so famous, you ask? Well, could be the fact that it is also the most visited glacier and its most remarkable feature that attracts lots of visitors: It offers one of the most spectacular views in the world for watching a breaking glacier.

The viewing site consist of a steep rocky hill just in front of the glacier´s breaking wall of ice where visitors can watch it very close with safety. The glacier face advances periodically over the L-shaped Lago Argentino (Argentine Lake) forming a natural dam which separates the two halves of the lake when it reaches the opposite shore.

With no way to go, the Brazo Rico (Rico Arm) side of the lake rise some 30 meters above the level of the main lake. The enormous pressure produced by the dammed water finally breaks the ice barrier holding it back, in a spectacular rupture event. This rupture cycle is not regular and it happens with a frequency between once a year to less than once every decade. In some years, the collapse of the weaker bottom of the ice dam leaves behind a natural arch of ice above (like the one in your video), which sheds pieces of itself for a few days until collapsing.

http://upload.wikimedia.org/wikipedia/commons/8/80/Perito_moreno_glacier_panoramic.JPG
Panoramic view from the Visitors Center. Most other glaciers on Earth need a Cruise Line ship to enjoy such a view in front of the falling ice wall, but here you can have a close front seat row to watch the magnificent event.

Perito Moreno glacier is located in Los Glaciares National Park, in the Argentine province of Santa Cruz; it belongs to one of the last remaining continental ice caps in the world, the Southern Patagonian Ice Field, one that was formed during the last Ice age. This region´s continental ice field (one that has not melted during the last 10.000 years) is the world's third largest reserve of fresh water.

This is also what makes this place and this glacier unique, along with the fact that is one of only three glaciers on Earth that are not melting at the same pace of others and can be seen year around. Another side feature of Perito Moreno could be the near town of El Calafate, an exotic Alpine look place, which turned into one of the most exiting world destinations during the last few decades.

Perito Moreno two weeks prior to the 2004 rupture. Take a look at how the glacier face has blocked the lake dividing it in two.
http://upload.wikimedia.org/wikipedia/commons/9/95/SantaCruz-PeritoMoreno-P2140146b.jpg

Aerial view...
http://phobos.ramapo.edu/foreign_languages/graphics/bgPeritoMorenoGlacierArgentina.jpg

...and the satellite view that better explain the Perito Moreno natural wonder.
http://upload.wikimedia.org/wikipedia/commons/archive/d/d9/20071102042348!Perito_Moreno_Glacier_-_Satelite_-_NASA_-_ISS004-E-9707.JPG
Source(s):
http://en.wikipedia.org/wiki/Perito_Moreno_Glacier

http://www.idlewords.com/2006/03/the_collapse_of_the_perito_moreno.htm

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