The Neptune Caves (Grottes de Neptune)

In the heart of an unspoiled natural setting, the NEPTUNE CAVES (Grottes de Neptune) offer you an educational and fun opportunity of discovery, with family and friends, come hell or high water!

Throughout a 45-MINUTES GUIDED TOUR, plunge into an extraordinary decor made up of wonderfully emphasised creations of nature.

Whether you are a child or an adult, underground enthusiasts or just simply looking for a unique experience, you will not fail to be enchanted by our boat trip along the underground river followed by a sound and light show!

After the visit, don’t miss a detour via our reception chalet where you can buy souvenirs, jewels and minerals but also cold drinks, beers from the region and ice creams.

Caution : due to the roadworks on the N5 (national network) in the suburbs of Frasnes-lez-Couvin, please follow the deviation signs “rue de l’Adujoir – Grottes de Neptune” to reach the caves.

Useful information


The Mont des Sens (hill of the senses)

The Mont des Sens (hill of the senses) is a 1.5-km marked trail over the “roof” of the Neptune Caves. Throughout the seasons, typical Calestienne wildlife and plant-life can be found in this place: wild orchids, fox gloves, lizards, as well as many birds of prey. The path not only offers a fine view of the Eau Noire River, but also boasts 8 information points allowing you to discover nature via all your senses. A leaflet describing the route is available from reception.

Walking map “Mont des Sens”



New this year : wooden playground !

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  • Rue de l’Adujoir 24

    5660 Couvin

  • +32(0)60 31 19 54
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