John and I spent a little over an hour today photographing my favourite structure and this is one of three shots that I'm happy with (though don't know which I prefer). I'll put the other two up over the weekend.

Update: the red and white dots – a couple of people wandering in the distance – have gone. They didn't add anything to the shot so I cloned them out.

Update #2: hmmm, seems my chemistry isn't up to much ;-) I've renamed this entry (from FeO2) as per the suggestions in the comments.