The Top 9 Natural Monuments around Onnaing
Onnaing’s landscape is a beautiful place to explore — something that you can best experience by visiting one of our 9
beautiful natural monuments around Onnaing. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
beautiful natural monuments around Onnaing. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!
Last updated: October 4, 2025
A legend has been perpetuated for generations on this 25 meter high stone planted on a ridge (in patois we say that it rocks).
A little step back in time... …
A little step back in time... …
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Like most of the wetlands in the Haine valley, the Harchies-Hensies-Pommeroeul marshes were formed in subsidence caused by mining. The depressions were formed in the mid-1920s and immediately filled with …
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The Bois d'Angre, located in Honnelles, is a forest renowned for the Caillou-qui-Bique, a 370 million year old pudding rock. This forest is home to rich biodiversity with oaks, ash …
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The mistletoe is an evergreen semi-parasite on trees, which takes root in the wood of the host. It has leathery opposite leaves.
The white, berry-like fruit is spread by birds. …
The white, berry-like fruit is spread by birds. …
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Located in the heart of the Haine valley, between Mons and Tournai, the marshy complex of Harchies-Hensies-Pommeroeul, better known as the Marais d'Harchies, is a major site for the fauna …
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Extend your search for the best caves by checking out these guides of the top ones around Onnaing:
CrespinQuaroubleCondé-Sur-L'EscautVicqQuiévrechainThivencelleVieux-CondéSaint-AybertRombies-Et-MarchipontFresnes-Sur-EscautHergniesSaint-SaulveOdomezEscautpontSaultainScarpe-EscautFlines-Lès-MortagneBruille-Saint-AmandPréseauCurgiesChâteau-L'AbbayeNivelleSaint-Amand-Les-EauxMarlyBruay-Sur-L'EscautSebourgRaismesWallersHélesmesDenainAulnoy-Lez-Valenciennes
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