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  • Attractions
  • Woodland, nature reserve or natural area

The Fondry des Chiens, nestled in the Viroin-Hermeton natural park near Nismes, is a unique, protected site in Belgium. Discover the incredible biodiversity of this natural sinkhole, 20 metres deep.

Sculpted by rain through time

This geological curiosity is the result of rainfall eroding the local limestone for millions of years. The site, unique in Belgium, is protected. Its biodiversity is of great value earned it the title of natural monument of Belgium. It even has its own legend: the wandering knight.

Practical information

  • Accessible all year. Entry is free.
  • The site can be part of hunting grounds between October and December: do check before visiting in this period


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.


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Wallonia, Destination Nature