The Invisible River | Extraordinary Biodiversity

The Invisible River - Under Water between the Black Forest and the Vosges - The biggest groundwater reservoir in Europe forms a vast underground river. It gives rise to wetlands of matchless beauty, home to rare animals and plants. The Invisible River - Under Water between the Black Forest and the Vosges (2019) Director: Serge Dumont Writers: Serge Dumont, Frank Nischk Narrator: Paul Bendelow

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