Gunfighters of the Northwest

Gunfighters of the Northwest 1954 was the 53rd serial released by Columbia Pictures. It was entirely filmed on location at Big Bear Lake, California, USA, and not a single scene was filmed in indoors setting.

The entire filming of Gunfighters of the Northwest took place outdoors at Big Bear Lake, California. Even a scene set in a cave was filmed outside with director Spencer Gordon Bennet setting up the lighting and a back grop to make it appear to be an internal shot. During filming, the whole cast and crew all lived at a nearby hotel.The two heroic leads, Jock Mahoney and Clayton Moore, were injured during production. On the second day of shooting, Moores horse backed and threw him. He landed on his back and was knocked unconscious. An assistant director took him to a doctor in Big Bear, who said he would be laid up for a little while, after which Moore visited a chiropractor in town, who was able to help him. He was not able to perform any rising scenes for a few days but could act in all the dramatic scenes with no problems. Mahoney was hurt on the same day, injuring a metatarsal in a fight scene, but he was able to walk and continue filming the next day. ........

Source: Wikipedia