The math Alexander did for the number of cut trees was of course done considering idealized conditions, whereas in reality the felled trees could not simply be cut down and left there on the ground.
They needed to be moved and processed.
But even still, the thick woods that served as a rudimentary defense for Tibias were soon gone under Alexander's directive, making the thick lush green hill soon look like the head of a bald headed eagle.
And as with the speed the trees were cut, the speed of construction of the wall too took a similar pace, with the foundations for it being very quickly completed.
After all, a single man would dig several tons of dirt a day.
And when you multiply that figure by twenty thousand hard working men, all laboring from dawn to dusk, it very quickly ended up being a very big and wide ditch.
