
Undergound River
Les Grottes de Vallorbe (Caves of Vallorbe), Switzerland
June 21, 2005 - 12:23 UTC
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Caption
Water of the Lake Lac de Joux disappears underground a few kilometers then reappear before Vallorbe. It is towards 1865 that the origin of the source of the river l'Orbe was proven using dyes.The underground river is in permanent activity. The panorama shows a dead arm.