Indeed, it was one of my most, if not the most, incredible exploration. I wandered through it for about 8 hours and went out of it totally exhausted. Unfortunately, as you pointed out, copper thieves have destroyed a lot there. And more unfortunately too, I'll probably never get back there because it's actually under demolition. Anyway, it was a really amazing exploration in a world out of nowhere... I'm really happy that you enjoy looking at it !
One had to wonder how many similar things are going on all over the world. Where I live the fences usually go up long before the demolition happens. I'd like to get some of these beautiful alarm panels out of buildings about to be destroyed, but by the time you know the place is being knocked down, there's no way in.