周辺の天然記念物・トップ18

Quarries have been a major industry in this region for almost a century. In recent decades, further expansion projects have been planned here in Moha. These have repeatedly met with resistance from residents of neighboring Vinalmont, where the rural hamlets of Wanzoul and Roua are threatened by an expansion of the quarry's current infrastructure. During a public inquiry organized by the local government in 1997, the number of written protests (nearly 1,500) exceeded the total number of residents of Vinalmont (over 1,070). Source: Wikipedia

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Moha's old career

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The Henri Fontaine stream rises between Cras-Avernas and Bertrée, then irrigates several villages in the commune of Hannut before crossing the reserve at Grand-Hallet. Its source has long been linked to watercress cultivation, which requires good quality water.

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This marshy area of 21 hectares was already inhabited in prehistoric times and buildings were built in Roman times. Today there is a water pumping station and watercress beds are still in use. The area includes part of the valley of the Henri-Fontaine stream with flora that can no longer be found in the rest of the area. Damp meadows, dense reed land and tall perennial herbaceous plants of 1.5 to 2 meters high, located in alluvial zones on non-acidic and fairly moist soil with pieces of forest with trees that do well on wet soils, such as alders: these are remnants of the typical wet valleys that you often saw before agriculture became increasingly intensive. You cannot enter the nature reserve itself but you can see it quite well and at a certain point (if you follow the path next to it) you come to a beautiful piece of alluvial forest with the stream. Be sure to also walk to the Moulin Dardenne, which is located on the edge of the area on another road and location with the nature reserve behind it and streams that come out of the nature reserve. This is also the start of the path along the nature reserve. On the other side you will also find a start of the path - with information board - at a junction with the Rue du Condroz in Grand-Hallet. You will find it just before the bend behind which the Dardenne watermill is located. Turn left, it rises a little and then you are on the path. More on https://www.hannut.be/wp-content/uploads/2021/06/brochure-7-fontaines-nl.pdf where you will find a full description of a 'seven-sources walk' that of course runs along the nature reserve and many sights around it.

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This path, which you reach after a short, steep climb from the stream, leads you along an inaccessible nature reserve, where you literally walk above an old quarry and caves for a part. At a certain point you literally walk above the entrance to that underground quarry that you can also see below. Part of the path runs between the edge of the valley and fields and on another part you have the nature reserve instead of the fields that was given the name 'Réserve naturelle Natagora des Caves Paheau'. Natagora is the counterpart of Natuurpunt and the quarry and caves are therefore called the 'caves Paheau'.

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The Sept Fontaines nature reserve extends in Hannut on a part of the valley where the Henri-Fontaine flows, where many vegetation elements have disappeared, also on other territories municipalities. Stagnant water, a gently sloping river, dry reed beds, ruderal scrub, alluvial alder-ash forests, alluvial meadows... all bear witness to what could be observed less than a century ago in most valley bottoms, before the significant intensification of land use. The site is part of the main ecological structure of Hannut, as a core area.

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There is not much to see here. The quarry is also not accessible. Follow the path up to the viewpoint over the quarry with benches (also for picnic), information boards and more beautiful things.

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The Moha quarry, operated since 1860 by Carmeuse, is famous for its marine limestone formed 350 million years ago. Used in construction and the manufacture of lime, this stone is found in the local architectural heritage. The quarry offers the “Promenade de la Pierre”, an educational walk with informative panels on the history and uses of limestone. Next to the quarry there is a turquoise lake.

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