All of my horses are barefoot. This video is makes a compelling case for going with out shoes. It also goes with what my ferrier does. He doesn’t cut the horses frog or pare out the sole.
Warning this video is graphic. It is an actual horses’ hoof cut in half, so there is some blood, tissues (lamina) and bones (coffin) involved.
Golden Spike Farm's Plog 
Apr 29, 2015 @ 07:59:35
This was actually a very good video of biomechanics! I do my.own farrier work and am happy to know my hunches were correct. Even though it was very macabre to see actual internal hoof structure- I’m glad you found a video that showed the contraction and extention of actually hoof materials. Thank you for the link!