It’s unusual to see a properly rigged suspension performed outside. People often shoot bondage scenes outdoors, but nature doesn’t typically provide a lot of load tested reachable hardpoints, in areas safe from prying eyes, with clear space beneath them. This is a rather beautiful exception.
I’m afraid I’ve no idea where this is from. It’s another of the endless images that show up on tumblr with no identification. Please leave a comment if you can help me attribute it correctly.