My mom remembers visiting this park in the 40's. Not a surprise since Grampa was a Geologist.
This is a small campground for such an old park, only 34 sites, walk-ins included. All sites are along one road with a turnaround at the end. There is only one building with toilets, showers and no pit toilets. These are clean and well maintained.
There is a playground near the entrance that is shared with the caves entrance area, a bit of a walk.
The caves themselves are down a long hill from the campground. There are facilities there too, and a concession stand with limited hours/ days. The caves are fun to explore, but not ADA accessible. Bring flashlights and in some areas watch your head.
The Visitor's center at the park entrance is staffed by volunteers and only open on weekends.
Once you've done the caves, there's not much else to see within the park. But visit the Hurstville interpretive center for a nice nature center and trails.