Cheers for your comment mate. I also never knew this place existed. I randomly thought to myself one day "why not go and check out the sugar factory", so I was very surprised when I rounded the corner and saw this large glass-like lake.
I'm really not sure what the darkish spot to the left is, good observation. Perhaps it had something to do with my CPL, as the sun was beaming through trees behind me but wasn't as strong in that region. I checked the original and it's like that too so I don't think it has anything to do with the PP work.
Chelsea Sugar Factory (131) *