Can you recap what the arguments surrounding this photo are? I'm lost. Do the apologists say this is a horse?
I'm just now unraveling this riddle. Milton R. Hunter was the stake president who accompanied Thomas Ferguson on his trip to Mesaoamerica. They wrote a book called Ancient America and the Book of Mormon. In this book, a photo is included, taken by Otto Done, that is supposed to be a "bearded man" riding a horse, from a wall in chichen itza.
Here is a close up of the photo:
http://www.the-book-of-mormon.com/otto-done.jpg
I had long ago seen this picture on the aforementioned (zombie, ever returning to haunt me) Benjamin Chapman's site. I tried, in vain, to figure out what it was actually a photo of. I have many books that talk about chichen itza, some at length, and not one ever mentioned a picture of a horse on one of the temple walls. So I was stumped. Crocket helpfully provided a review written by someone called "rc carrier" who stated that he had finally located the actual real sculpture, and it was a sculpture of the jaguar serpent. That picture is here:
http://www.sacred-texts.com/nam/maya/cbc/img/pl1a.jpg
If you copy and paste the two photos on a page beside each other, and analyze the shadow patterns, you can tell that it is, indeed, the same sculpture. The Otto Done photo is of such poor quality that it can look like a horse if you try hard enough.
The better photograph can not look like a horse, no matter how hard you try.