Gouffre de Cabrespine – 38 km
« Le Gouffre Géant de Cabrespine is one of the 10 most beautiful caves in Europe, with a depth of 250 metres and a volume of 1,600,000 m³. It offers the particularity of containing a diversity of formations unequalled until now. »
You will have several options, you can either visit the upper part through using the glass suspension bridge. By taking the route of L'accro Grotte de Cabrespine or by plunging into the heart of the abyss and visiting the lower part by the Soutairaine river.
Not to be missed !
For more info click here https://www.gouffre-de-cabrespine.com/