This is probably what you are thinking of:
https://www.google.com.au/maps/place...0609b4904409d0
Frogs Hollow airfield. It's actually further than Moruya, at around an hour.
Frogs Hollow Flyers aerodromes south coast flying pilots
I've been going annually to Narooma/Dalmeny for 20 years, not aware of any others that are closer.