I went out on Wednesday and took a look around but couldn't find it (and it's taken me this long to find my username and password for the forums!) Had a good look around 5,6 & 8 and got very excited when I found a big silvery 'X', but no Isis. It looked like someone had been there before me too, so I bet someone else knows where I mean
It's not flooded now, but is a bit wet in places. I made it around comfortably in work clothes without getting muddy, so I wouldn't let that deter you. Good luck to anyone who is going this weekend - it may just be my shoddy map-reading, but I think the map around CC is a little misleading, particularly heading clockwise from 8, but it's pretty easy to get where you want to be.
Does anyone know anything about those huge concrete octagons?