cinematic trailer question about DW and SW..

[randomone05]

im curious as to why, when DW lands on the 2 pillars in SW, that they dont just collapse? i know they are built of stone and are fairly strong(ofc) but, a giant dragon basically plowing right into them would have, i thought, send them crumbleing. yea, this is kinda a wierd question to ask NOW, but every time i see the trailer on tv i think of this.
were the pillars made of special-Deathwing-resistant stone or magically enchanted by gnomes and/or made of gnomes skeletons?

[depthnight]

nah. it's the blocks are not that strong but the concretes are.

[randomone05]

i still think gnome skulls are in them somewhere....

[depthnight]

well. we do add some gnome skull powder in the brick mix..