They believed the man's name was something like Charles Quin and his wife Minna. The couple were from China but had lived in Auckland for eight months. Minna was studying to be a chef while Charles was a teacher in China.
The Archers told how they got into difficulties on their walk. "In hindsight we should have turned back but we kept thinking it must be close to the end," Mrs Archer said.
About three hours into the walk in the Kaueranga Valley at the start of their holiday last month Mrs Archer, 67, realised they were in trouble.
They had planned to take a different walk but changed their minds after talking to a Department of Conservation worker.
They were expecting the trip to take between two and four hours - it took them nine.
"We're not trampers normally but we're reasonably fit," Mrs Archer said.
The track was difficult to navigate, muddy from recent rain and had a very steep downhill section.
Mr Archer said at one point his legs were so sore he could not move them.
Said Mrs Archer: "If my husband had had to stay overnight then I don't think he would have survived."
They had set out about 10am but were sitting on the side of the track at about 3.30pm when a Chinese couple and their friend found them.
"It was like a miracle," Mr Archer said.
While Mr Archer was concerned about slowing down the trio, they were determined to help the struggling couple. The man told Mr Archer: "No, I can see you are in trouble."
The man helped prop up Mr Archer during the steep descent while the trio helped them navigate a damaged bridge.
At about 7pm the group eventually returned to the carpark "shattered".