

Best for technical divers, shore entry.
Exsurgence du Perthuis is a technical cave dive site located in Annecy-le-Vieux, France. As a freshwater resurgence system, the site is defined by its overhead environment, requiring divers to possess appropriate cave and technical certifications. Entry is from the shore, with parking available nearby. Conditions, including visibility and water flow, are variable and fluctuate significantly based on upstream hydrology, rainfall, and snowmelt in the French Alps. Divers must be prepared for changing currents and restricted exit paths. This site is strictly for experienced technical divers capable of managing the risks associated with cave penetration and complex overhead environments.
45.79414, 5.54339
As a resurgence system, water flow can increase significantly after rainfall or snowmelt in the Alps, so check upstream conditions and local hydrology before committing to a dive. Parking is available at the site, but confirm access and any local permits required before travelling.
Access info coming soon
Expected in this region. No sightings logged here yet.
Skill Level
Technical
Entry
Shore
No, this is a technical cave site that requires advanced cave diving certifications and experience in overhead environments.
The site is accessed from the shore.
No, this is a technical cave diving site and is not suitable for snorkelling.
The primary hazard is the overhead environment of the cave system, which requires specific technical training to manage restricted exit paths and potential changes in water flow.
Diving at Exsurgence du Perthuis in Lhuis requires the following certifications: Cave, Technical. Always dive within your training limits.