 The contract stipulated that Maugham would receive an additional $50,000 if the film did not start shooting by February 2, 1946.In August 1945, producer Darryl F. Zanuck had the second unit begin shooting in the mountains around Denver, Colorado, which were to portray the Himalayas in the film.The stars had not yet been cast; Larry Darrell was played by a stand-in and was filmed in extreme long shot.