In reply to BStar:
I don't know when it happened, but I first heard of it a couple of weeks ago, but didn't get the details until some mates where there a couple of days ago, I've not seen it myself but have been promised hi res photos - it's a pain - I'll have to re-write that section of the guide and we'll have to re-draw the topos! Look at the top right of your photo, just left of Wreckers, those blocks are just sitting there, not really supported by anything as far as I can see, some of them are the size of a large van or bigger.