The Centre piece of the M2 Bushland area is by far the Flood Retention basin. its at least 30 meters high with a causeway across a drainage tunnel through the bottom conner and a 45 degree wall.
i have specifics down to the google map location and bus routes FFS!
ill post photos next time I'm there but was my first in Urban Exploration.
theres 3 or 4 fantastic sets of cliffs not far that have an amazing view, water pipes that span a gorge and what was a lovely bush walking track before development, theres a BMX/Mountain bike track carved through it and a stream with many banks and sand bars. Its actually quite beautiful in there
pack a picnic and your walking shoes its a fantastic piece or urban exploration/bush walking
PM for specifics
"When life's got you down, climb as high as you can!" - Revelations at 40+ stories
i get around like sushi on a kaiten