Miserable Fence Rail Rider
It doesn’t take very long riding on a narrow fence rail for this punishment to get rather serious indeed, as I believe our sorry heroine has already figured out:
Model is said to be Kami Roberts, photo is by Henry Higgins.
Elsewhere on Bondage Blog:
I found the source of this image – quite by accident. There are several others in the series.
https://fetlife.com/users/149814/pictures/1196589
For complex and boring historical reasons I don’t have a Fetlife login and can’t be arsed to create one right now, so I’m trusting BudMan that this is a good and useful link.
A little further digging (since I do have a Fet account) resulted in this blog post:
http://artofpunishment.blogspot.com/2009/09/wooden-pony.html