Lets not also forget it seems that the photographer is at a ground angle… And to be honest, I can walk back and forth on my horses back pretty easily, along with laying on them.. sliding off their butt.. Us horseback riders can get pretty weird. Most of us don’t wear helmets or protective gear, especially the younger riding generations and horses used to this most of the time DONT take off or bolt. Some horses are spookier than others. I have a horse that spooks at anything, and one that i have jumped off of (in a position like this) and didn’t even flinch.