Die kleinen Giganten des Nordens - Das Geheimnis der Lemminge

They are small. They are angry. And every four year or so they appear in masses seemingly from nowhere. Meet the Norway lemming, perhaps the most misunderstood and mysterious animal of the Scandinavian mountains. The film follows the unfolding ecological thriller of the exploding lemming population that creates a domino effect in the entire Nordic nature. Finally it inevitably leads to a dramatic climax with the crash of the lemming population and then a sudden lack of prey for the predators. (Ekotopfilm)