I saw this horse a few days ago on one of my walks. At first I thought he may have been dead, or sick and in the process of dying.
But then after watching him for a minute or so, I called to him to get his attention, and that is when I discovered that he must have only been taking a nap.
He sat up, looked at me for a moment, then got all the way up and walked over to a different area of the enclosure, but unfortunately I did not get a picture of that.
It's not everyday that you see a sleeping horse lying all the way down on the ground that isn't injured or sick, at least it is not something I have ever seen before. Perhaps if you have a lot of experience with horses, or live on a ranch, you see it all the time? But for me it was a first, and am happy that I got a picture of it, so that I could share it with you here.