研究那些冰~ Hints: Antarctic Lambert Glacier 2/3 front-end

Rivers of ice spill down from the icecap as great glaciers and creep slowly towards the edge of the continent and the sea.
When you get beneath the snout of one of these huge glaciers, you begin to appreciate the immense power and size of the Antarctic ice sheet. The ice here towers 100 feet above me, and the whole front of the glacier is about two miles across. But this is a small glacier, the largest glacier in Antarctic and in the world is the Lambert Glacier, and that's 25 miles across. But this is not a place where you want to linger. The glacier moves forward at a rate of about 2/3 of a mile a year and the front-end is continually breaking away to form icebergs. And if one came down now, well, the surge could easily overturn a small boat.

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