The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from A Tramp Abroad by Mark Twain:|
above the floor of the valley! The terminal moraines
(those which are pushed in front of the glaciers)
cover something like twenty square miles of country.
At the mouth of the Valley of Aosta, the thickness of
the glacier must have been at least TWO THOUSAND feet,
and its width, at that part, FIVE MILES AND A QUARTER."
It is not easy to get at a comprehension of a mass of ice
like that. If one could cleave off the butt end of such
a glacier--an oblong block two or three miles wide
by five and a quarter long and two thousand feet thick--
he could completely hide the city of New York under it,