Sydney is full of nice little pocket National Parks. It seems to be a hangover from the difficult terrain protecting areas from urban development. This one probably struggles to be small enough to be a pocket national park. I have been driving past it for many years, but this day we did not have time to travel further into the mountains. It was a plesent discovery. The lookout is much better than the ones that are on main roads.
Not at all like pocket battleships.