I'd imagine that most of the wall has been metal detected by hobbyists throughout the years. I don't know how much of it is under protection but from various vi

I'd imagine that most of the wall has been metal detected by hobbyists throughout the years. I don't know how much of it is under protection but from various videos on YouTube it seems like a great section of it goes thru farmlands out in the boonies. A pretty easy target to hit with a metal detector without anyone noticing.