Cave Of Forgotten Dreams

Cave of Forgotten Dreams is a 2010 3D documentary film by Werner Herzog, about the Chauvet Cave in southern France. The film premiered at the 2010 Toronto International Film Festival and consists of footage filmed inside the cave as well as interviews with various scientists and historians. The film also includes footage of the nearby Pont d’Arc natural bridge.
Herzog’s interest in the Chauvet cave was prompted by Judith Thurman’s New Yorker article “First Impressions”. Thurman is listed as one of the co-producers of the film.

The cave is carefully preserved and the general public is not allowed to enter. Herzog received special permission from the French Minister of Culture to film inside the cave. Having received permission, Herzog nonetheless had to film under heavy restrictions. All people authorized to enter must wear special suits and shoes that have had no contact with the exterior.[6] Also, because of near-toxic levels of radon and carbon dioxide, nobody can stay in the cave for more than a few hours per day.

Herzog was allowed to have only three people with him in the cave: the cinematographer Peter Zeitlinger, a sound recorder, and an assistant. Herzog himself worked the lights. The crew was allowed to use only battery-powered equipment they could carry into the cave themselves, and only lights that gave off no excess heat. The 3-D cameras were custom-built for the production, and were often assembled inside the cave itself. Herzog was allowed six shooting days of four hours each. The crew could not touch any part of the cave’s wall or floor, and were confined to a 2-foot-wide (0.61 m) walkway.

The production encountered several technical difficulties in working with the 3-D cameras in a documentary setting. At the time of production, 3-D films were typically shot on stages with heavy use of digital manipulation. Often, foreground and background elements would be shot separately and digitally composited into the finished shot. Techniques for 3-D filmmaking in natural environments with a single camera and no compositing were largely undeveloped, and had to be worked out experimentally by the crew in post-production.

Before production of Cave of Forgotten Dreams, Herzog was skeptical of the artistic value of 3-D filmmaking, and had only seen one 3-D film (James Cameron’s Avatar). Herzog still believes that 3-D is not suited for general use in cinema, but used it in Cave to help “capture the intentions of the painters”, who incorporated the wall’s subtle bulges and contours into their art. The idea to use a 3-D camera for the film was first suggested by Zeitlinger, who had imagined before ever entering the cave that 3-D might be appropriate to capture the contours of the walls. Herzog dismissed the idea, believing 3-D to be (in Zeitlinger’s words) “a gimmick of the commercial cinema”. After visiting the cave, however, Herzog immediately decided that the film must be shot in 3-D. After the production, Herzog stated that he had no plans to use 3-D again.

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