He set out without indicating his intentions to anyone and was poorly dressed, without even a raincoat.
The fact he was able to call police to say he was in trouble was pure luck, Watson said.
"It was purely by chance he had a cellphone with him and had coverage."
The tourist had set out late Tuesday morning for what is supposed to be a four-hour walk up Mount Fox, but by early afternoon was in trouble.
He was fortunately able to call police from the mountainside at 2.20pm saying he was stuck in snow.
The man was advised to start trying to return down the route he had used to get up the mountain.
The sole Ross policeman was dispatched south to Fox Glacier and walked in towards Mount Fox.
He met the tramper on the track about 20 minutes' walk from the road end about three-and-a-half hours later, at 5.40pm. The man also had no map, compass or torch and was carrying only a light day pack with no real food supply.
- Greymouth Star