• 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



Rue Orgeveau,5670Nismes
COVID-19 : in accordance with the latest Covid-19 restrictions, most museums, tourist attractions and information centres are now closed in Wallonia, and events cancelled. We do our best to keep our information up to date but it's always best to check with the site you wish to visit before heading there - by phone, email, social media or simply a look at their website - to see their latest opening hours and entry conditions. Some will prefer you to book your ticket in advance. Infos
The information provided is an indication only. We advise you to inquire directly with the organisers of the event that interests you before you leave.


Minimum duration : 0:30
Maximum duration : 1:00

Langue d'accueil



Guide available/groups - FR

Discount vouchers

Discount vouchers