Ohmigosh - that is the worst I've ever seen. I just hate barbed wire and we don't have any on the place. There's one endurance ride we do where there's lots along the trail and even strung across the middle of the water trough. It always scares me, even more since we saw a loose horse come back down the trail at us with his saddle hanging off one side, bucking. He was not hurt when he somersaulted into some wire strung between trees and then thrashed around there on his back and side until someone could help him. The images are burned in my memory.
Nancy