The 40-year-old and the boy planned a two-hour walk in Mount Royal National Park in the Hunter region some 240km north of Sydney.
A 40-year-old mother and her nine-year-old son have been found in the Hunter Valley, in New South Wales, Australia after they went missing in the bush since 2 October.
He also explained that rescue workers were out looking for the mother and son for four days before they were found, Channel News Asia said.
Police located auto three days ago and launched a full-scale search of the area with the help of SES volunteers, NSW Ambulance and National Parks and Wildlife.
Police Inspector Joanne Schultz said they were in remarkably good condition considering their experience.
"Their auto was then sighted in the vehicle park of the Mount Royal National Park on October 9".
'The body does some odd things when put into stressful situations, ' NSW Ambulance Inspector Steenson said.
Andrew Steenson said: "There are some steep slopes and thick scrub, and it drops off by about 500m in some parts of the search area".
A large-scale search was launched on Monday to trace them.
Police are impressed with their resilience and they are now recovering at Singleton Hospital where they are being treated for dehydration and insect bites.
He said they had told of using leaves to collect water, removing ticks and leeches from each other, sharing a pair of shoes and tying grass around trees to mark their location.