{"id":281223,"date":"2025-05-31T06:00:00","date_gmt":"2025-05-31T04:00:00","guid":{"rendered":"https:\/\/legrandcontinent.eu\/fr\/?p=281223"},"modified":"2025-05-31T16:31:56","modified_gmt":"2025-05-31T14:31:56","slug":"blatten-une-vallee-sans-montagne-images-et-cartes","status":"publish","type":"post","link":"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/","title":{"rendered":"\u00c0 Blatten, une vall\u00e9e sans montagne : images et cartes de la g\u00e9opolitique de l’anthropoc\u00e8ne"},"content":{"rendered":"\n\n
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Avant la catastrophe<\/p>

Le glacier de Birch neuf jours avant l\u2019\u00e9boulement qui a conduit \u00e0 la destruction du village de Blatten.<\/span><\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Des soldats de l’unit\u00e9 de secours en cas de catastrophe (Kata Hi Ber Bat) de l’arm\u00e9e suisse chargent des engins lourds sur des remorques afin de venir en aide au site de la coul\u00e9e de boue catastrophique qui a caus\u00e9 d’importants d\u00e9g\u00e2ts dans le village de Blatten, sur la base militaire de Turtmann, en Suisse, le jeudi 29 mai 2025. \u00a9 Alessandro della Valle\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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L\u2019\u00e9vacuation<\/p>

D\u00e8s le 17 mai, des habitants du village ont \u00e9t\u00e9 \u00e9vacu\u00e9s  : depuis le 14, \u00e0 la suite d\u2019importants glissements de terrain, les premiers signes d\u2019un effondrement \u00e9taient visibles.<\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Des soldats de l’arm\u00e9e suisse arrivent \u00e0 Wiler, en Suisse, le jeudi 29 mai 2025, alors qu’une grande partie du village de Blatten, situ\u00e9 dans la vall\u00e9e de Loetschental, dans le canton du Valais, a \u00e9t\u00e9 ensevelie sous des masses de glace, de boue et de rochers. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption>\n <\/figure>\n<\/a>\n\n\n\n\n\n
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Vue a\u00e9rienne montrant la destruction du village de Blatten, en Suisse, le jeudi 29 mai 2025, au lendemain d’une \u00e9norme avalanche de d\u00e9bris, provoqu\u00e9e par l’effondrement du glacier de Birch, qui a balay\u00e9 le fond de la vall\u00e9e et d\u00e9truit une grande partie du village. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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28 mai 2025, 15h24<\/p>

Sous le poids qui s\u2019\u00e9tait accumul\u00e9 sur elle \u00e0 la suite des glissements de terrain, la \u00ab  langue  \u00bb du glacier de Birch a finalement c\u00e9d\u00e9 le 28 mai. Les secousses enregistr\u00e9es \u00e0 15h24 ce jour-l\u00e0 correspondent \u00e0 un s\u00e9isme de 3,1 sur l\u2019\u00e9chelle de Richter.<\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Des centaines de m\u00e8tres cubes de roches et de glaces en suspension apr\u00e8s l’\u00e9boulement. \u00a9 Alain Amherd<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Des centaines de m\u00e8tres cubes de roches et de glaces en suspension apr\u00e8s l’\u00e9boulement. \u00a9 Alain Amherd<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Des centaines de m\u00e8tres cubes de roches et de glaces en suspension apr\u00e8s l’\u00e9boulement. \u00a9 Alain Amherd<\/figcaption> <\/figure>\n \n <\/div>\n
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Des centaines de m\u00e8tres cubes de roches et de glaces en suspension apr\u00e8s l’\u00e9boulement. \u00a9 Alain Amherd<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n
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Une \u00e9norme avalanche de d\u00e9combres le jeudi 29 mai 2025, au lendemain de l’effondrement du glacier de Birch qui a d\u00e9truit le village de Blatten en Suisse. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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3 millions de m\u00e8tres cubes<\/p>

C\u2019est le volume de mat\u00e9riaux \u2014 boue, roche, glace \u2014 qui s\u2019est d\u00e9vers\u00e9 sur le village de Blatten, engloutissant ses 130 maisons et son \u00e9glise.<\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Une importante avalanche compos\u00e9e d’un m\u00e9lange de glace, de roches, de neige et d’eau atteint le fond de la vall\u00e9e \u00e0 Wiler apr\u00e8s l’effondrement du glacier de Birch au-dessus de Blatten, en Suisse, le mercredi 28 mai 2025. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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\u00c9boulement au-dessus du village de Blatten, dans le Loetschental, le dimanche 18 mai 2025. \u00a9 Cyril Zingaro\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Une importante avalanche compos\u00e9e d’un m\u00e9lange de glace, de roches, de neige et d’eau atteint le fond de la vall\u00e9e \u00e0 Wiler apr\u00e8s l’effondrement du glacier de Birch au-dessus de Blatten, en Suisse, le mercredi 28 mai 2025. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n \n <\/div>\n
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\u00c9boulement au-dessus du village de Blatten, dans le Loetschental, le dimanche 18 mai 2025. \u00a9 Cyril Zingaro\/Keystone via AP<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n\n
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Vue du Kleines Nesthorn montrant les traces des rochers qui se sont d\u00e9tach\u00e9s et ont gliss\u00e9 vers la vall\u00e9e au-dessus du village de Blatten, en Suisse, le vendredi 30 mai 2025. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption>\n <\/a>\n<\/figure>\n\n\n\n
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Alessandro Ghezzer (via X)<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Cartographier la catastrophe<\/p>

Une reconstitution en trois dimensions permet de prendre la mesure de l’effondrement d’une partie de la montagne.<\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Mod\u00e9lisation 3D par Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Mod\u00e9lisation 3D par Michael Cruickshank (via X)<\/figcaption> <\/figure>\n \n <\/div>\n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n \n <\/div>\n
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Michael Cruickshank (via X)<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n
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Un h\u00e9licopt\u00e8re \u00e9vacue une voiture du village de Blatten, en Suisse, le jeudi 29 mai 2025, au lendemain d’une \u00e9norme avalanche de d\u00e9bris, provoqu\u00e9e par l’effondrement du glacier Birch, qui a balay\u00e9 le fond de la vall\u00e9e et d\u00e9truit une grande partie du village. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Il n\u2019y a pas de solution technique<\/p>

La destruction du village \u00e9vacu\u00e9 \u00e0 donn\u00e9 lieu \u00e0 des sc\u00e8nes qui permettent de prendre la mesure d\u2019un renversement.<\/span><\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Capture d’\u00e9cran via X<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Capture d’\u00e9cran via X<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Capture d’\u00e9cran via X<\/figcaption> <\/figure>\n \n <\/div>\n
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Capture d’\u00e9cran via X<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n

<\/p>\n\n\n\n\n

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\n \n \"Vue\n <\/picture> \n
Vue a\u00e9rienne montrant la destruction du village de Blatten, en Suisse, le jeudi 29 mai 2025, au lendemain de l’\u00e9norme avalanche de d\u00e9bris, provoqu\u00e9e par l’effondrement du glacier de Birch, qui a balay\u00e9 le fond de la vall\u00e9e et d\u00e9truit une grande partie du village. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Le \u00ab lac \u00bb de Lonza<\/p>

Le 29 mai, lendemain de l\u2019effondrement, le niveau du \u00ab  lac de Lonza  \u00bb \u2014 l\u2019\u00e9tendue d\u2019eau form\u00e9e par le massif d\u2019\u00e9boulis d\u00e9vers\u00e9 dans la vall\u00e9e \u2014 augmentait de 80 centim\u00e8tres par heure. Les images satellites permettent de prendre la mesure de cet engloutissement.<\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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Cette image satellite fournie par Maxar Technologies montre le village de Blatten juste apr\u00e8s la coul\u00e9e de boue, en Suisse, le jeudi 29 mai 2025. \u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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Cette image satellite fournie par Maxar Technologies montre le village de Blatten juste apr\u00e8s la coul\u00e9e de boue, en Suisse, le jeudi 29 mai 2025. \u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n \n <\/div>\n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/a>\n <\/div>\n <\/div>\n \n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n \n <\/div>\n
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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n\n
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\n \n \"Vue\n <\/picture> \n
Vue a\u00e9rienne montrant la destruction du village de Blatten, en Suisse, le jeudi 29 mai 2025, au lendemain d’une \u00e9norme avalanche de d\u00e9bris, provoqu\u00e9e par l’effondrement du glacier de Birch, qui a balay\u00e9 le fond de la vall\u00e9e et d\u00e9truit une grande partie du village. \u00a9 Jean-Christophe Bott\/Keystone via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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La catastrophe d\u2019apr\u00e8s<\/p>

La crainte est aujourd\u2019hui li\u00e9e \u00e0 cette \u00e9tendue d\u2019eau qui grossit \u00e0 mesure que la neige fond \u2014 il fait entre 20 et 30 degr\u00e9s dans la vall\u00e9e ces jours-ci. Le 30 mai, la digue tenait. L\u2019eau s\u2019\u00e9tait infiltr\u00e9e parmi les d\u00e9bris. Mais le lac s\u2019\u00e9largit.<\/span><\/p>\n<\/div> <\/div>\n<\/div>\n\n\n\n\n

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\u00a9 Maxar Technologies via AP<\/figcaption> <\/figure>\n <\/a>\n \n <\/div>\n
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Wiler, Kippel : les villages en aval seront-ils de nouveaux Blatten ?<\/p>

Les principaux villages apr\u00e8s Blatten dans la vall\u00e9e ont \u00e9t\u00e9 \u00e9vacu\u00e9s d\u00e8s le 28 mai. Les autorit\u00e9s du Valais vivent aujourd\u2019hui dans la crainte de leur sort \u2014\u00a0et de celui des villages apr\u00e8s eux.<\/span><\/p>\n<\/div> <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u00ab  Je ne peux concevoir un Dieu sans existence, non plus qu\u2019une montagne sans vall\u00e9e.  \u00bb<\/p>\n

En Suisse, \u00e0 Blatten, la montagne s\u2019est effondr\u00e9e \u2014 engloutissant tout.<\/p>\n

Les images de cette terre renvers\u00e9e expriment quelque chose d\u2019essentiel de notre contemporain.<\/p>\n

Il faut les \u00e9tudier.<\/p>\n","protected":false},"author":10,"featured_media":281266,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"templates\/post-picturestory.php","format":"standard","meta":{"_acf_changed":true,"_trash_the_other_posts":false,"footnotes":""},"categories":[1730],"tags":[],"staff":[1780],"editorial_format":[],"serie":[],"audience":[],"geo":[1917],"class_list":["post-281223","post","type-post","status-publish","format-standard","hentry","category-energie-et-environnement","staff-le-grand-continent","geo-europe"],"acf":{"open_in_webview":false,"accent":false},"yoast_head":"\n\u00c0 Blatten, une vall\u00e9e sans montagne : images et cartes de la g\u00e9opolitique de l'anthropoc\u00e8ne | Le Grand Continent<\/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:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c0 Blatten, une vall\u00e9e sans montagne : images et cartes de la g\u00e9opolitique de l'anthropoc\u00e8ne | Le Grand Continent\" \/>\n<meta property=\"og:description\" content=\"\u00ab Je ne peux concevoir un Dieu sans existence, non plus qu\u2019une montagne sans vall\u00e9e. \u00bb En Suisse, \u00e0 Blatten, la montagne s\u2019est effondr\u00e9e \u2014 engloutissant tout. Les images de cette terre renvers\u00e9e expriment quelque chose d\u2019essentiel de notre contemporain. Il faut les \u00e9tudier.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/\" \/>\n<meta property=\"og:site_name\" content=\"Le Grand Continent\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-31T04:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-31T14:31:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/legrandcontinent.eu\/fr\/wp-content\/uploads\/sites\/2\/2025\/05\/gc-imagesmonag-1-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Matheo Malik\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/legrandcontinent.eu\/fr\/wp-content\/uploads\/sites\/2\/2025\/05\/gc-imagesmonag-1-scaled.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Matheo Malik\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/\",\"url\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/\",\"name\":\"\u00c0 Blatten, une vall\u00e9e sans montagne : images et cartes de la g\u00e9opolitique de l'anthropoc\u00e8ne | Le Grand Continent\",\"isPartOf\":{\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/legrandcontinent.eu\/fr\/wp-content\/uploads\/sites\/2\/2025\/05\/SIPA_ap22960972_000033-1-scaled.jpg\",\"datePublished\":\"2025-05-31T04:00:00+00:00\",\"dateModified\":\"2025-05-31T14:31:56+00:00\",\"author\":{\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/#\/schema\/person\/a1c2123a1ef5abd663fcde8f63063d45\"},\"breadcrumb\":{\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/legrandcontinent.eu\/fr\/2025\/05\/31\/blatten-une-vallee-sans-montagne-images-et-cartes\/#primaryimage\",\"url\":\"https:\/\/legrandcontinent.eu\/fr\/wp-content\/uploads\/sites\/2\/2025\/05\/SIPA_ap22960972_000033-1-scaled.jpg\",\"contentUrl\":\"https:\/\/legrandcontinent.eu\/fr\/wp-content\/uploads\/sites\/2\/2025\/05\/SIPA_ap22960972_000033-1-scaled.jpg\",\"width\":2560,\"height\":1597,\"caption\":\"This satellite image provided by Maxar Technologies shows the village of Blatten after suffering a mudslide, in Switzerland, May 29, 2025. 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