Authorities in Western Australia say an autistic boy, who survived more than 28 hours missing in the bush, used his Boy Scouts training to stay hydrated.
Dennis Dear, 14, disappeared on a quad bike in bushland south-east of Perth on Sunday morning.
Authorities launched a full-scale air and land search, and grave fears were held for the 14-year-old's safety as temperatures in the area reached 42 degrees Celsius.
SES volunteers who found Dennis on Monday say he approached them and introduced himself and asked for a drink of water.
Incident controller Tony Colfer said Dennis appeared to be in good health, having used survival skills he learnt at Boy Scouts.
"He's drunk water from blackboys [grass trees] which obviously helped him," Mr Colfer said.
Dennis also covered himself in sand to keep cool.
The boy's father said he was incredibly relieved and proud of him.
"To go from being a humble backyard kid to somebody that survives out in the bush, it's like: can we all learn that please?"
Dennis was taken to hospital to undergo health checks.
A man has been fined for not preparing adequately before setting out on a three-day trek in the Blue Mountains, west of Sydney.
Police say the 29-year-old only had a kilo of potatoes and a naan bread in his backpack when he left for the walk on Wednesday afternoon.
The man, from Victoria, failed to show up at his destination three nights later.
A search involving two helicopters and volunteer rescue workers was launched on Saturday afternoon.
Four hours after it began, the man was found and winched to safety from the Wolgan Valley.
He was found to have a minor ankle injury but declined treatment.
He was taken to Katoomba Police Station and issued with a $500 fine.
Inspector Brenton Charlton from the NSW Police Rescue Force says the man was fined for for putting his own safety, and the safety of others, at risk.
"When the man set out he had with him a kilo of potatoes and naan bread," he said.
"We believed the 29-year-old placed himself and the search teams at risk through his lack of planning and preparation, and through carrying inadequate provisions."
Police also allege his intended route, through remote terrain, would have been extremely difficult to complete safely.
They say it would have taken much longer than the man had estimated.