I'm a French guy in his mid-thirties, living in Paris. I've been exploring Paris catacombs network a lot, multiple underground limestone and sand quarries, abandonned railroad tunnels, factories, buildings and bunkers. Also did some other things once like a small part of sewers or crossing bridges by under, which I didn't really feel comfortable with as the catwalk was very rusty and with no handrail...
I'll be visiting your country in March 2017, 17-20/03 in Sydney and 22-27/03 in Melbourne.
I'd love to add some urban exploration to my trip and would be grateful if anyone felt like guiding me throughout his favorite spot.
I'm easygoing, friendly, discreet, not too clumsy, I can speak your language (even though I might have you repeat some sentences

Kipple