A 23-year-old man who got lost in the Australian outback while hiking was found alive by other hikers on Wednesday after living on two granola bars and water from rivers and streams for nearly two weeks, authorities said.

The man, Hadi Nazari, was hiking in Kosciuszko National Park, about 240 miles south of Sydney, when he got lost on Dec. 26, the holiday known as Boxing Day in Australia, New South Wales police said in a statement.

Two of Mr Nazari’s friends called the police at around 20:45 on December 26 after he failed to arrive at the camp where they expected to meet him. He was last seen about six hours ago when he went alone to the Hannels Spur track. About 400 people in the air and on land were looking for Mr. Nazarija for 13 days, the police said.

Throughout the search, the authorities hoped that Mr. Nazari is alive because he is an experienced hiker and had camping supplies in the backpack he was carrying when he disappeared. On New Year’s Eve, “garbage and hiking poles” that apparently belonged to Mr. Nazario were found near the Kosciuszko River. On Sunday, his lighter, camera, camera bag and the remains of a campfire he had started were discovered near the Geehi River.

The location has “incredibly dense brush and challenging terrain conditions,” Acting Superintendent Jill Gibson of the Riverina Police District said in a statement last week, adding that in some parts of the wilderness being searched, rescuers “can’t see their feet” because of the dense vegetation.

Around 3.15 pm on Wednesday, a a group of mountaineers near Blue Lake, which is about six miles from the camp, found Mr. Nazarija, Commander Andrew Spliet from the Riverina Police District said at a press conference. Mr. Nazari called out to the group as they passed and told them he was lost and thirsty. The mountaineers called an ambulance, and Mr. Nazari was then airlifted to the command post to be evaluated by paramedics.

Mr. Nazari had no major injuries and appeared to be in good health, police said. He was then taken to the hospital for further evaluation and rehydration.

“We never gave up hope of finding him,” Inspector Josh Broadfoot of the Riverina Police District said in a statement on Wednesday. “We are happy to return him safely to his family.”

Chief Spliet said that Mr. Nazari found two granola bars in the cabin while he was missing, but didn’t eat anything else. Police believe creeks and rivers served as his only source of water while he was missing, but Superintendent Spliet said they would conduct a full interview with Mr. Nazari to find out more about how he survived.

Friends met Mr. Nazari after he was rescued. One of them, Muhammad Iylas, told a local affiliate Australian Broadcasting Corporation that he seemed “perfectly well” as he had not eaten much in two weeks.

“I’m kind of in shock and full of happiness,” Mr. Iylas said. “It’s amazing.”