I was walking along a dirt path and to my left was a dry stone wall. As I walked I saw in front the back of horse on the other side of the wall, its head down chewing the grass. I had just about got level with the horse when it suddenly raised its head with a start and didn't look best pleased as it snorted at me, it took a good look and put its head back down. I had my camera in hand and managed a quick shot of its expression.