Docherty Creek Road airstrip.
Chiarain.
Bingo! You got it.
When that photograph was taken, it was owned by the late Alex Millar (CEO and joint owner of Mount Cook Ski Planes). That's his house you can see next to the strip. He preferred to live on the West Coast on the other side of the Southern Alps from the main operating base of his company, and was also one of the pilots on the West Coast side of the Southern Alps.
Here is a photograph of one of the Cessna 185 Skiplanes on the airstrip....
And here is an even closer map....you can see the airstrip alongside Docherty Creek Road on the lefthand side of the map. A short distance away is the main Franz Josef Glacier aerodrome....