Rivière souterraine du Heurt, Underground cave system in Senneville-sur-Fécamp, France.
The Rivière souterraine du Heurt forms a natural network of water-filled passages beneath the limestone cliffs of the Seine-Maritime coastline.
The cave system has been an integral part of local geological formations since the erosion of calcium deposits during the Quaternary period.
Local residents maintain a collection of tales about the underground river, connecting it to the maritime heritage of Senneville-sur-Fécamp.
Visitors should contact local authorities before exploring the cave system, as access depends on water levels and seasonal safety conditions.
The underground river creates distinctive limestone formations where freshwater meets the nearby English Channel's influence.
Location: Senneville-sur-Fécamp
GPS coordinates: 49.77479,0.39612
Latest update: March 5, 2025 03:44
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