{"id":3543,"date":"2024-01-05T21:01:18","date_gmt":"2024-01-05T21:01:18","guid":{"rendered":"https:\/\/jevisitelyon.com\/?p=3543"},"modified":"2025-12-02T09:11:24","modified_gmt":"2025-12-02T09:11:24","slug":"the-mysterious-fishbone-tunnels-under-the-croix-rousse","status":"publish","type":"post","link":"https:\/\/jevisitelyon.com\/en\/the-mysterious-fishbone-tunnels-under-the-croix-rousse\/","title":{"rendered":"The mysterious \u201cfishbone\u201d tunnels under Croix-Rousse"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3543\" class=\"elementor elementor-3543\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1fddc4c e-flex e-con-boxed e-con e-parent\" data-id=\"1fddc4c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-219aacb elementor-widget elementor-widget-text-editor\" data-id=\"219aacb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Since their discovery over 60 years ago under the city of Lyon, the &quot;fishbone&quot; tunnels have become a real mystery. These tunnels, found by chance in 1959 under the Croix-Rousse hill during construction work, have raised many questions about their origin and purpose.<\/p><h2>The unexpected discovery<\/h2><p>On February 18, 1959, road workers building a tunnel to ease traffic congestion discovered an intriguing network of tunnels. The network, consisting of 32 identical tunnels, resembled the structure of a fish skeleton, hence the name &quot;fish bones.&quot;<\/p><h2>A persistent mystery<\/h2><p>Despite their discovery, the fish bones were long neglected by the Lyon authorities. In 1961, a water leak from one of the wells led to the discovery of other passages containing human remains and ancient artifacts, including a bronze laurel wreath covered in gold leaf. These discoveries have been linked to the time of the Roman city of Lugdunum, but the exact purpose of the tunnels has remained unexplained.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6666cb elementor-widget elementor-widget-gallery\" data-id=\"a6666cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns_mobile&quot;:2,&quot;lazyload&quot;:&quot;yes&quot;,&quot;gallery_layout&quot;:&quot;grid&quot;,&quot;columns&quot;:4,&quot;columns_tablet&quot;:2,&quot;gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;link_to&quot;:&quot;file&quot;,&quot;aspect_ratio&quot;:&quot;3:2&quot;,&quot;overlay_background&quot;:&quot;yes&quot;,&quot;content_hover_animation&quot;:&quot;fade-in&quot;}\" data-widget_type=\"gallery.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-gallery__container\">\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/aretes-de-poisson.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"a6666cb\" data-elementor-lightbox-title=\"ar\u00eates-de-poisson\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzU0OCwidXJsIjoiaHR0cHM6XC9cL2pldmlzaXRlbHlvbi5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjRcLzAxXC9hcmV0ZXMtZGUtcG9pc3Nvbi5qcGciLCJzbGlkZXNob3ciOiJhNjY2NmNiIn0%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/aretes-de-poisson-300x225.jpg\" data-width=\"300\" data-height=\"225\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/Le_fond_dune_arete.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"a6666cb\" data-elementor-lightbox-title=\"Le_fond_d&#039;une_arete\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzU2MiwidXJsIjoiaHR0cHM6XC9cL2pldmlzaXRlbHlvbi5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjRcLzAxXC9MZV9mb25kX2R1bmVfYXJldGUuanBnIiwic2xpZGVzaG93IjoiYTY2NjZjYiJ9\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/Le_fond_dune_arete-300x200.jpg\" data-width=\"300\" data-height=\"200\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/Aretes-De-Poisson_Puits.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"a6666cb\" data-elementor-lightbox-title=\"Aretes-De-Poisson_Puits\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzU2MywidXJsIjoiaHR0cHM6XC9cL2pldmlzaXRlbHlvbi5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjRcLzAxXC9BcmV0ZXMtRGUtUG9pc3Nvbl9QdWl0cy5qcGciLCJzbGlkZXNob3ciOiJhNjY2NmNiIn0%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/Aretes-De-Poisson_Puits-225x300.jpg\" data-width=\"225\" data-height=\"300\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e7d1bf elementor-widget elementor-widget-text-editor\" data-id=\"5e7d1bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Hypotheses about their function<\/h2><p>There has been much speculation about the function of fish bones. While various theories have been put forward, such as their use for drainage or as catacombs, no definitive answer has been given as to their purpose. Some believe that they were used during the Roman Empire to store money collected through taxes or even treasure. Others have speculated that they may have been used to hide the treasure of the Knights Templar, but this has not been confirmed.<\/p><h2>New discoveries and dating<\/h2><p>Archaeological studies have revealed that the Fishbones date back to the Roman period, approximately between 100 BC and the 1st century AD. The connection between the Fishbones and the Sarrazini\u00e8res tunnels has also been confirmed, further adding to the complexity of the mystery surrounding their function.<\/p><h2>Towards a revelation?<\/h2><p>In 2022, specialists presented different hypotheses at a seminar, but no clear consensus has been reached as to the exact reason for the construction of these tunnels. Researchers continue to study the artifacts and explore possibilities to elucidate this underground mystery.<\/p><h2>Uncertain conclusion<\/h2><p>Despite decades of research and discovery, the Fishbones remain a fascinating enigma. They represent a unique aspect of Lyon&#039;s history, but the precise purpose of their construction remains an unsolved mystery, always inviting more research and speculation about this enigmatic underground network.<\/p><h2>Video<\/h2><p>A file by Romain Desgrand can be found on <a href=\"http:\/\/tribunedelyon.fr\">tribunedelyon.fr<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b45f055 elementor-widget elementor-widget-video\" data-id=\"b45f055\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=B1to_XFD0A0&amp;t=8s&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Depuis leur d\u00e9couverte il y a plus de 60 ans sous la ville de Lyon, les tunnels des \u00ab\u00a0ar\u00eates de poisson\u00a0\u00bb sont devenus un v\u00e9ritable myst\u00e8re. Ces tunnels, trouv\u00e9s par hasard en 1959 sous la colline de la Croix-Rousse lors de travaux de construction, ont suscit\u00e9 de nombreuses questions quant \u00e0 leur origine et leur [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3555,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-endroits-disparus"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les myst\u00e9rieux tunnels des &quot;ar\u00eates de poisson&quot; sous la Croix-Rousse<\/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:\/\/jevisitelyon.com\/en\/the-mysterious-fishbone-tunnels-under-the-croix-rousse\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les myst\u00e9rieux tunnels des &quot;ar\u00eates de poisson&quot; sous la Croix-Rousse\" \/>\n<meta property=\"og:description\" content=\"Depuis leur d\u00e9couverte il y a plus de 60 ans sous la ville de Lyon, les tunnels des \u00ab\u00a0ar\u00eates de poisson\u00a0\u00bb sont devenus un v\u00e9ritable myst\u00e8re. Ces tunnels, trouv\u00e9s par hasard en 1959 sous la colline de la Croix-Rousse lors de travaux de construction, ont suscit\u00e9 de nombreuses questions quant \u00e0 leur origine et leur [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jevisitelyon.com\/en\/the-mysterious-fishbone-tunnels-under-the-croix-rousse\/\" \/>\n<meta property=\"og:site_name\" content=\"Je Visite Lyon\" \/>\n<meta property=\"article:author\" content=\"dabjjhgjh\" \/>\n<meta property=\"article:published_time\" content=\"2024-01-05T21:01:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-02T09:11:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/jevisitelyon.com\/wp-content\/uploads\/2024\/01\/Plan_des_aretes_de_poisson.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"353\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"JeVisiteLyon\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JeVisiteLyon\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/\"},\"author\":{\"name\":\"JeVisiteLyon\",\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/#\\\/schema\\\/person\\\/f12110febef500e97dfe69ba9fc1dec1\"},\"headline\":\"Les myst\u00e9rieux tunnels des \u00ab\u00a0ar\u00eates de poisson\u00a0\u00bb sous la Croix-Rousse\",\"datePublished\":\"2024-01-05T21:01:18+00:00\",\"dateModified\":\"2025-12-02T09:11:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/\"},\"wordCount\":520,\"publisher\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/jevisitelyon.com\\\/wp-content\\\/uploads\\\/2024\\\/01\\\/Plan_des_aretes_de_poisson.jpg\",\"articleSection\":[\"Endroits disparus\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/\",\"url\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/\",\"name\":\"Les myst\u00e9rieux tunnels des \\\"ar\u00eates de poisson\\\" sous la Croix-Rousse\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/jevisitelyon.com\\\/wp-content\\\/uploads\\\/2024\\\/01\\\/Plan_des_aretes_de_poisson.jpg\",\"datePublished\":\"2024-01-05T21:01:18+00:00\",\"dateModified\":\"2025-12-02T09:11:24+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#primaryimage\",\"url\":\"https:\\\/\\\/jevisitelyon.com\\\/wp-content\\\/uploads\\\/2024\\\/01\\\/Plan_des_aretes_de_poisson.jpg\",\"contentUrl\":\"https:\\\/\\\/jevisitelyon.com\\\/wp-content\\\/uploads\\\/2024\\\/01\\\/Plan_des_aretes_de_poisson.jpg\",\"width\":600,\"height\":353},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/jevisitelyon.com\\\/les-mysterieux-tunnels-des-aretes-de-poisson-sous-la-croix-rousse\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/jevisitelyon.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Les myst\u00e9rieux tunnels des &#8220;ar\u00eates de poisson&#8221; 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