How to use "piles" in a sentence

An enormous hole had been made and the Earth had been thrown violently in every direction, forming piles that could be seen two kilometres away.

Great piles of earth had formed around a pit at the top of the hill - the final and largest one the Martians had made - and from behind these piles thin smoke rose against the sky

It was a large space, with enormous machines here and there within it, great piles of material and strange buildings

Wimbledon particularly had suffered, and beyond there I saw piles of earth around the sixth cylinder