The Uffington White Horse dates back to the Bronze Age, and is held by many (including myself) to be an image of the shape-shifting Horse Goddess Epona.

The eye of the Uffington Horse has long been called "The Eye of Epona", and local folklore has it as traditional for couples to stand upon the eye to get handfasted — although I should point out that its currently forbidden to stand upon the chalk figure itself!!

Until I have the time to write a more complete picture of Epona, here are some links to other sites that have been made about Her...

The Divine Horsewoman
The Realm of Epona
Epona
The Mythic Images Collection
Real Magick - the Occult Library
Raven's Quest
More about Epona