Invisible River: Under Water Between the Black Forest and the Vosges
Invisible River: Under Water Between the Black Forest and the Vosges
A documentary about the largest groundwater reservoir in Europe, which forms an underground river in the Upper Rhine Valley. Underwater cameraman Serge Dumont capture footage of the inhabitants of this biotope
Invisible River: Under Water Between the Black Forest and the Vosges airs on Sky Nature at 10:00 AM, Friday 26 September. (Subtitles.)
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