Exsurgence de Port-Miou, Underwater karst spring in Cassis, France
The Port-Miou spring emerges from an extensive network of subterranean channels, producing a water flow of approximately 7 cubic meters per second into the Mediterranean Sea.
The first underwater explorations of Port-Miou were conducted by the French Office of Submarine Research, with American scientist Conrad Limbaugh losing his life during a 1960 expedition.
The Port-Miou spring system represents a significant geological formation in Provence, drawing researchers and students interested in Mediterranean karst formations.
The spring's water contains high salinity levels due to deep marine contamination, making it currently unsuitable for drinking water supply to the surrounding regions.
The underwater cave system extends more than 2,200 meters in length and reaches depths of 233 meters below sea level, creating one of France's most extensive submerged cave networks.
GPS coordinates: 43.20520,5.51304
Latest update: June 23, 2025 09:46
Calanques National Park
5.2 km
Château de Cassis
2.3 km
En-Vau
1.1 km
Calanque de Port-Miou
186 m
Plage de Port Pin
237 m
Port-Pin
238 m
Plage du Bestouan
1.7 km
Calanque de l'Œil de Verre
3.7 km
Devenson
2.4 km
Calanque de l'Oule
1.7 km
Location kayak Cassis
2.3 km
Plage d'En Vau
1.3 km
Plage Grande Mer
2.2 km
Col de la Candelle
3.9 km
Scenic viewpoint
533 m
Cassis Lighthouse
1.9 km
Scenic viewpoint
3.9 km
Église Saint-Michel de Cassis
2.3 km
Belvedere d'en Vau
1.5 km
Town hall of Cassis
2.4 km
Scenic viewpoint
834 m
Scenic viewpoint
4.7 km
Scenic viewpoint
1.8 km
Château de Port-Miou
529 m
Fontaine, avenue Victor Hugo, Cassis
2.4 km
Chapelle Sainte-Croix-de-Jérusalem de Cassis
3.2 km
Grande Candelle
3.8 km
Scenic viewpoint
1 kmReviews
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