The Painted Desert in Arizona to finish the interior scenes on the studio lot in Hollywood. Ninety percent of the film was shot in Arizona, between the Painted Desert in Dinosaur Canyon, and Tuba City, Arizona, as well as a nearby Indian reservation. In mid-November it was reported that the recording portion of the film had been completed. Clarence Kolster edited the film during December 1930. By November, advertisements promoting the film were being released to the trade papers. Produced by Pathé Exchange, the film would become part of the RKO Radio Pictures library when they purchased the studio in March, after which
German submarine U-1105 the "Balkongerät" had 48 hydrophones and improved electronics, which enabled more accurate readings to be taken. It was one of less than ten submarines that the Germans outfitted with experimental synthetic rubber skin of anechoic tiles designed to counter Allied sonar devices. Codenamed "Alberich," after a sorcerer from ancient Norse mythology, this top-secret rubber coating process ultimately contributed to the ship's survival under extreme combat conditions and earned it the name "Black Panther." For this reason, a black panther sprawled across the top of the globe was painted on "U-1105's" conning tower. U-boats with "Alberich" coating include: Type IIB —