Fondry des Chiens, Natural sinkhole in Nismes, Belgium.
Fondry des Chiens is a natural ground depression in the limestone area of Viroinval, formed by dissolution of rock beneath the surface. The hollow shows steep rock walls and curved stone formations that shape the valley floor.
The site was known in Roman times and used by early inhabitants, as shown by archaeological finds in the surrounding area. The formation itself resulted from geological processes that occurred over millions of years.
The name "Fondry" comes from local speech and describes natural ground depressions that formed in this region. People have perceived and used this place as part of their landscape for centuries.
The site is easily reached from Nismes church through marked walking paths. The area offers multiple hiking routes that pass through various natural formations with different difficulty levels.
The depression floor supports rare plants, including specialized orchids and globe flowers, that thrive only in this particular limestone environment. This localized biodiversity makes the site particularly interesting for nature observers.
Location: Viroinval
GPS coordinates: 50.06920,4.55646
Latest update: December 8, 2025 19:59
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