http://www.cleverscampcamp.com/national-park-camping-nsw/

Are there any National Park Campsites in or around Seal Rocks, NSW, Australia?
I’m camping there very soon – but I can only find commercial sites. I much prefer National park capsites as they’re usually in amongst the nature.
Seal Rocks, North Coast NSW AustraliaSeal Rocks has perfect proximity to Myall Lakes National Park, Hawks Nest and Pacific Palms, … Treachery Beach makes a great campsite or surf site …
www.totaltravel.com.au/travel/nsw/northcoastnsw/greatlakes/travel-guides/Destinations/seal-rocks
Diamond Head Camping Ground, Crowdy Bay National Park