The myth collapsed publicly in 1982 when CBC Television's The Fifth Estate aired Cruel Camera, an investigation by Bob McKeown into animal cruelty in nature filmmaking. McKeown traced the notorious lemming sequence not to some remote Arctic migration but to the Bow River near Canmore, Alberta. He revealed that a single small group of lemmings had been hauled to the location, jostled on makeshift turntables to simulate mass movement, and physically shoved off a cliff to create the impression of synchronized drowning. A specialist pointed out that the species shown simply does not engage in the mass migratory—and suicidal—behavior depicted. The program also disclosed that the memorable shot of a polar bear cub tumbling down an ice slope was not filmed on frozen Arctic ice but in a Calgary studio. The exposé demolished the sequence's scientific credibility and reframed it as manufactured cruelty rather than documentary truth.
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