I am having discussions about the Wall. Some think that it is an impossibility for a structure of that size to remain standing if it is made from ice alone. Personally I think that the wall started of a lot smaller and slowly grew larger over the centuries as the black brothers trampled layer after layer of blue metal or small stones across the top. If that is the case then the wall is probably a mixture of crushed rocks and ice, which in my opinion would be a VERY sturdy construction, as demonstrated by Jon when he filled the barrels with water and used them to crush the battering ram.
Well, the Wall has undoubtedly "eaten" a lot of crushed stone over the centuries and millenia, especially around the castles where the black brothers regularly gravelled the walkways. But there's a lot more ice than there is stone.
Yes, the Wall was much smaller when first raised. It took hundreds of years to complete and thousands to reach it's present height.
If time is permiting would you mind giving a brief description on how the wall was constructed?
Much of those details are lost in the mists of time and legend. No one can even say for certain if Brandon the Builder ever lived. He is as remote from the time of the novels as Noah and Gilgamesh are from our own time.
But one thing I will say, for what it's worth -- more than ice went into the raising of the Wall. Remember, these are =fantasy= novels.