{"version":"1.0","provider_name":"Kasteelru\u00efne &amp; Fluweelengrot","provider_url":"https:\/\/www.kasteelvalkenburg.nl\/fr\/","author_name":"James Robinson","author_url":"https:\/\/www.kasteelvalkenburg.nl\/fr\/author\/james-robinson\/","title":"La Grotte de Velours - Kasteelru\u00efne &amp; Fluweelengrot","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"tB8gXRkpxz\"><a href=\"https:\/\/www.kasteelvalkenburg.nl\/fr\/decouvrez-nos-emplacements\/la-grotte-de-velours\/\">La Grotte de Velours<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.kasteelvalkenburg.nl\/fr\/decouvrez-nos-emplacements\/la-grotte-de-velours\/embed\/#?secret=tB8gXRkpxz\" width=\"600\" height=\"338\" title=\"\u00ab\u00a0La Grotte de Velours\u00a0\u00bb &#8212; Kasteelru\u00efne &amp; Fluweelengrot\" data-secret=\"tB8gXRkpxz\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.kasteelvalkenburg.nl\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.kasteelvalkenburg.nl\/wp-content\/uploads\/2020\/03\/Kasteelgrot-Fluweelengrot_Rondleiding-over-ons.jpg","thumbnail_width":1440,"thumbnail_height":662,"description":"Un labyrinthe form\u00e9 par l\u2019extraction de marne. La marne a \u00e9t\u00e9 exploit\u00e9e par les carriers qui d\u00e9coupaient les blocs de marne \u00e0 la scie (les \u2018blokbrekers\u2019) pour la construction notamment du Ch\u00e2teau de Valkenburg. Les activit\u00e9s d\u2019exploitation ont donn\u00e9 naissance \u00e0 un vaste d\u00e9dale de galeries anciennes et irr\u00e9guli\u00e8res. Tickets Les issues de secours Les [&hellip;]"}