Answer:
You saw me where I never was and where I could not be. And yet within that very place, my face you often see.
Thirty white horses on a red hill, first they champ, then they stamp, then they stand still.
I am round as a bowl, deep as a tub, but all the world's water couldn't fill me up.
What is it that has four legs, one head, and a foot?
Some try to hide, some try to cheat. But time will show, we always will meet. Try as you might, to guess my name. I promise you'll know, when you I do claim.
I have two eyes in the front and a lot of eyes on my tail