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Pictogram identifying a member of the Pass
  • Attractions
  • Grottoes and caves
  • Museum or Interpretation Centre

Let the skills of nature as an artist amaze you once more... Sculpted by the 'Eau Noire' river 300 million years ago, the Neptune Caves, in Petigny, are one of Belgium's oldest underground cavities.

An exceptional location...

The 50 min, family friendly guided tour will immerse you in the most stunning setting. The visit starts at the foot of a Givet limestone cliff before continuing onto a light and show display on the underground river: a surreal, unforgettable experience. No need to be a geology enthusiast to enjoy this adventure!

... and a discovery trail

The site is nestled at the heart of the Calestienne. Nature, in this exceptional area, was listed as Natura 2000 and is therefore protected, hence the well-defined touristic paths to preserve it while letting visitors enjoy how rich and beautiful the flora is. Le Mont des Sens is a 1.5 km well-signed walk, going above the Neptune caves. Look out for wild orchids, digitalis, lizards, birds of prey... Stop at the 9 panels along the way to know more about the site.

Visitors can relax on the terrace after their visit and indulge in a selection of local dishes while children enjoy the play area.









We do our best to keep you informed. It's best, however, to check the latest news with the attraction you are visiting, or operator you have booked an activity with. Read our travel advice.
This information is given for indication purposes only, best to check with the site you hope to visit before heading there - by phone, email, social media or simply by visiting their website. Advantage Pass

Your Advantage Pass

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-10% off the admission price

Offer valid for adults and children (aged 4 to 12) from 17/02/2024 to 30/06/2024 depending on opening times. On presentation of your Pass at the ticket office.


Cafe - Shop - Car parking - Parking - Playground - Terrace


Guide available/groups - German - EN - FR - NL - Guide available/individuals - DE - EN - FR - NL Pass Pass

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Wallonia, Destination Nature