{"version":"1.0","provider_name":"Poland Travel (EN)","provider_url":"https:\/\/www.poland.travel\/en","author_name":"Poland Travel (EN)","author_url":"https:\/\/www.poland.travel\/en","title":"Krzemionki Opatowskie - Poland Travel (EN)","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"vPE8vSak8O\"><a href=\"https:\/\/www.poland.travel\/en\/krzemionki-opatowskie\/\">Krzemionki Opatowskie<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.poland.travel\/en\/krzemionki-opatowskie\/embed\/#?secret=vPE8vSak8O\" width=\"600\" height=\"338\" title=\"&#8222;Krzemionki Opatowskie&#8221; &#8212; Poland Travel (EN)\" data-secret=\"vPE8vSak8O\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.poland.travel\/en\/wp-content\/uploads\/sites\/17\/2022\/12\/krzemionki_opatowskie_1170.jpg","thumbnail_width":1170,"thumbnail_height":780,"description":"With its underground mining structures, flint workshops and some 4,000 shafts and pits, the site features one of the most comprehensive prehistoric underground flint extraction and processing systems identified to date. The site provides information about life and work in prehistoric settlements and bears witness to an extinct cultural tradition. The mining complex is an [&hellip;]"}