A "retired" electric fence. I remember as a kid touching an electic fence to see what would happen. What happens is ...it hurts!!! (I wasn't bright as a kid - I jumped off a windmill at age 8...read my other blog Windmills if you want to learn more about it.. http://mymindswindmills.blogspot.com/2006/10/lifes-lessons-learned-from-parachuting_27.html
(Click on the photo to view a larger image).