{"id":738,"date":"2025-06-12T09:03:39","date_gmt":"2025-06-12T07:03:39","guid":{"rendered":"https:\/\/www.concaverde.com\/escursione\/le-piramidi-di-erosione\/"},"modified":"2025-07-03T14:28:26","modified_gmt":"2025-07-03T12:28:26","slug":"les-pyramides-derosion","status":"publish","type":"escursione","link":"https:\/\/www.concaverde.com\/fr\/excursion\/les-pyramides-derosion\/","title":{"rendered":"Les pyramides d\u2019\u00e9rosion"},"content":{"rendered":"<p>Peu avant d\u2019arriver \u00e0 Zone, dans le hameau de Cislano, s\u2019ouvre majestueusement le d\u00e9cor des Pyramides d\u2019\u00c9rosion, commun\u00e9ment appel\u00e9es \u201cF\u00e9es de Pierre\u201d, mais scientifiquement identifi\u00e9es comme \u201cpyramides d\u2019\u00e9rosion\u201d. Ce ph\u00e9nom\u00e8ne naturel tr\u00e8s rare, qui ne compte que peu d\u2019exemples dans le monde, est caus\u00e9 par l\u2019action de l\u2019eau sur un terrain morainique en forte pente ; les gros blocs pos\u00e9s au sommet des pyramides agissent comme des \u201cchapeaux\u201d protecteurs du sol sous-jacent, r\u00e9duisant ainsi les effets de l\u2019eau. Elles constituent un important t\u00e9moignage de l\u2019\u00e9volution g\u00e9ologique de l\u2019\u00e9poque glaciaire et post-glaciaire alpine.<\/p>\n<p>Le vaste d\u00e9p\u00f4t morainique qui leur a donn\u00e9 naissance a \u00e9t\u00e9 laiss\u00e9 il y a environ 150 000 ans par une langue lat\u00e9rale, p\u00e9n\u00e9trant dans la vall\u00e9e du Bagnadore, de l\u2019imposant glacier provenant de la vall\u00e9e Camonica qui, durant la troisi\u00e8me glaciation de Riss, remplissait le bassin aujourd\u2019hui occup\u00e9 par le lac d\u2019Iseo.<br \/>\nLe terrain morainique est un m\u00e9lange de terre et de petits galets de calibre et d\u2019origine vari\u00e9s, ciment\u00e9s et durcis juste ce qu\u2019il faut pour avoir une certaine consistance, mais \u00e9galement facilement \u00e9rodables par le ruissellement des eaux m\u00e9t\u00e9oriques.<br \/>\nL\u2019action \u00e9rosive de la pluie sur le d\u00e9p\u00f4t morainique isole, peu \u00e0 peu, de gros blocs de roche (jusqu\u2019\u00e0 6 m\u00e8tres de diam\u00e8tre). Ces blocs exercent une action protectrice, en forme de parapluie, sur le mat\u00e9riau sous-jacent jusqu\u2019\u00e0 modeler une colonne de terre, la pyramide, qui peut atteindre 30 m\u00e8tres de hauteur, et est en outre prot\u00e9g\u00e9e par un film protecteur form\u00e9 par l\u2019argile insoluble transport\u00e9e par l\u2019eau le long des flancs de celle-ci.<br \/>\nLorsque le bloc situ\u00e9 au sommet tombe, la pyramide se d\u00e9sagr\u00e8ge rapidement jusqu\u2019\u00e0 ce qu\u2019un autre \u201cchapeau\u201d soit trouv\u00e9 \u00e0 un niveau inf\u00e9rieur, une magie tr\u00e8s d\u00e9licate, due \u00e0 des conditions environnementales et \u00e0 des combinaisons physiques vraiment particuli\u00e8res.<\/p>\n<h2>R\u00e9serve R\u00e9gionale<\/h2>\n<p>C\u2019est une R\u00e9serve R\u00e9gionale, institu\u00e9e en 1984, qui s\u2019\u00e9tend sur une surface d\u2019environ 21 hectares.<\/p>\n<p>Il existe un parcours circulaire d\u2019environ 1 km enti\u00e8rement am\u00e9nag\u00e9, le long duquel sont dispos\u00e9s plusieurs panneaux didactiques expliquant le ph\u00e9nom\u00e8ne et les caract\u00e9ristiques du territoire (g\u00e9omorphologie, flore, faune, etc.), avec des marches artificielles, des terrasses panoramiques et de nombreux points de repos. Le parcours est adapt\u00e9 pour \u00eatre emprunt\u00e9 m\u00eame avec des enfants.<\/p>\n<p>La r\u00e9serve est toujours ouverte.<\/p>\n","protected":false},"featured_media":133,"parent":0,"menu_order":0,"template":"","class_list":["post-738","escursione","type-escursione","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les pyramides d\u2019\u00e9rosion - Hotel Conca Verde<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.concaverde.com\/fr\/excursion\/les-pyramides-derosion\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les pyramides d\u2019\u00e9rosion - Hotel Conca Verde\" \/>\n<meta property=\"og:description\" content=\"Peu avant d\u2019arriver \u00e0 Zone, dans le hameau de Cislano, s\u2019ouvre majestueusement le d\u00e9cor des Pyramides d\u2019\u00c9rosion, commun\u00e9ment appel\u00e9es \u201cF\u00e9es [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.concaverde.com\/fr\/excursion\/les-pyramides-derosion\/\" \/>\n<meta property=\"og:site_name\" content=\"Hotel Conca Verde\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-03T12:28:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.concaverde.com\/wp-content\/uploads\/2025\/06\/c0837c2679db4398de1f8236878a7b886c8376a2.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"485\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.concaverde.com\\\/fr\\\/excursion\\\/les-pyramides-derosion\\\/\",\"url\":\"https:\\\/\\\/www.concaverde.com\\\/fr\\\/excursion\\\/les-pyramides-derosion\\\/\",\"name\":\"Les pyramides d\u2019\u00e9rosion - 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