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Les souterrains de l'Abbaye
![dsc00871C9EF11B3-164D-7F26-D7B7-543B993EB758.jpg](http://gilbart.be/choco1/images/com_osgallery/gal-1/thumbnail/dsc00871C9EF11B3-164D-7F26-D7B7-543B993EB758.jpg)
La taille de la pierre
![img-3290AE39E909-9811-2043-3783-852E3BC731AA.jpg](http://gilbart.be/choco1/images/com_osgallery/gal-1/thumbnail/img-3290AE39E909-9811-2043-3783-852E3BC731AA.jpg)
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Les fortifications
![img-3054840C713F-20E0-D523-D857-52203DD4DEAC.jpg](http://gilbart.be/choco1/images/com_osgallery/gal-10/thumbnail/img-3054840C713F-20E0-D523-D857-52203DD4DEAC.jpg)
Plans des places fortes du Hainaut
![beaumontB54DC437-5DBE-64D2-5BC1-3862D77DB7E4.jpeg](http://gilbart.be/choco1/images/com_osgallery/gal-10/thumbnail/beaumontB54DC437-5DBE-64D2-5BC1-3862D77DB7E4.jpeg)
Places fortes du Nord de la France
![avesnes25ABC0747-547D-A287-6F84-F75FA0EF44B4.jpeg](http://gilbart.be/choco1/images/com_osgallery/gal-10/thumbnail/avesnes25ABC0747-547D-A287-6F84-F75FA0EF44B4.jpeg)
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Saint-Ghislain 17545
![vue-018271668E-D3D1-E861-C462-A8F4D652BE98.jpg](http://gilbart.be/choco1/images/com_osgallery/gal-11/thumbnail/vue-018271668E-D3D1-E861-C462-A8F4D652BE98.jpg)
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