UPDATE: Police have confirmed the missing Cardiff woman and her elderly parents have been found safe and well.
They were discovered at Masseys Creek at 11:15am.
EARLIER: Three people have gone missing west of Dungog after failing to return from a day trip.
A 44-year-old Cardiff woman, her 75-year-old father and her 70-year-old mother were travelling to the Upper Allyn River yesterday.
A relative raised the alarm after they failed to return by nightfall.
Police say they're driving a silver 2004 Holden Commodore with registration plates AG16KU.
A major search has taken place overnight.
PolAir and SES volunteers will join the search this morning.
There are concerns for the elderly couple, as they both have medical issues and need medication.