Thats possibly the ugliest fencing I've ever seen around a monument. It looks like a high voltage danger zone, but then isn't that what some people think they are anyway? Did Mike get a job with the council???
It is horrible. OK, the place suffered a lot from 'casual' vandalism, just from kids hanging out on the stones. Not sure it'll have much benefit tho & (presumably it's locked) it'll stop interested people seeing it properly.