{"version":"1.0","provider_name":"South Estonia","provider_url":"https:\/\/southestonia.ee\/de\/","author_name":"metsatoimetus","author_url":"https:\/\/southestonia.ee\/de\/author\/metsatoimetus\/","title":"Piusa-H\u00f6hlen: Estlands verborgenes Naturwunder - South Estonia","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"d3XQZ0HM7f\"><a href=\"https:\/\/southestonia.ee\/de\/piusa-hoehlen-estlands-verborgenes-naturwunder\/\">Piusa-H\u00f6hlen: Estlands verborgenes Naturwunder<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/southestonia.ee\/de\/piusa-hoehlen-estlands-verborgenes-naturwunder\/embed\/#?secret=d3XQZ0HM7f\" width=\"600\" height=\"338\" title=\"&#8222;Piusa-H\u00f6hlen: Estlands verborgenes Naturwunder&#8220; &#8211; South Estonia\" data-secret=\"d3XQZ0HM7f\" 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\/\/# sourceURL=https:\/\/southestonia.ee\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/southestonia.ee\/wp-content\/uploads\/2025\/06\/piusa-koopad-scaled.jpg","thumbnail_width":2560,"thumbnail_height":1707,"description":"Die Piusa-H\u00f6hlen sind ein vom Menschen geschaffenes Bergwerksnetz im Kreis V\u00f5ru, das in den Jahren 1922\u20131966 beim Abbau von Glassand entstanden ist. Diese Bergbauhohlr\u00e4ume wurden in hellen Sandstein gegraben, und ihre Gesamtl\u00e4nge erreicht etwa 20 Kilometer. Die Piusa-H\u00f6hlen stellen das gr\u00f6\u00dfte Fledermaus-Winterquartier des Baltikums dar, weshalb sie unter Naturschutz stehen. F\u00fcr Besucher ist das Piusa-Besucherzentrum [&hellip;]"}