Bons

Bons is an advanced cave diving site in the Midi-Pyrénées of France, where an underground spring emerges through a karst siphon system in the Pyrenean foothills. The site requires cave diving certification and experience with cold-water overhead environments. The submerged passages wind through limestone bedrock, with the clear spring water providing visibility that can exceed 20 metres in optimal conditions. Geological features including scalloped walls, flowstone formations, and underwater galleries create a spectacular subterranean landscape. The constant water temperature of around 10°C demands proper thermal protection. Bons offers a rewarding exploration for qualified cave divers in the heart of France's premier caving region.