If anyone pops into Sydney make sure to check out the Squatspace Tour of Beauty. It is interesting for many reasons. I went on the tour when I was in Sydney with my girlfriend, last year and while is not an eco-tour it is a certainly a cultural tour of one of the rougher and politically active bits of Sydney.
http://www.squatspace.com/redfern/
http://www.youtube.com/watch?v=vVrbiYDpYIs
NB if anyone can suggest any literature I could read about Redfern, I would be very greatful
Best
Dan