Nobody knows for certain why the horse was made. “It’s a beautiful shape, very elegant,” says Miles. “It looks like it’s bounding across the hillside. If you look at it from below, the sun rises from behind it and crosses over it. In Celtic art, horses are often shown pulling the chariot of the sun, so that may be what they were thinking of here.”

From the start the horse would have required regular upkeep to stay visible. It might seem strange that the horse’s creators chose such an unstable form for their monument, but archaeologists believe this could have been intentional. A chalk hill figure requires a social group to maintain it, and it could be that today’s cleaning is an echo of an early ritual gathering that was part of the horse’s original function.