{"version":"1.0","provider_name":"De Leemputten - Genieten in de natuur","provider_url":"https:\/\/de-leemputten.nl\/de","author_name":"vormfactor","author_url":"https:\/\/de-leemputten.nl\/de\/author\/vormfactor\/","title":"Het onstaan - De Leemputten - Genieten in de natuur","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"TO63AjvTm1\"><a href=\"https:\/\/de-leemputten.nl\/de\/de-leemputten\/het-onstaan\/\">Der Ursprung<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/de-leemputten.nl\/de\/de-leemputten\/het-onstaan\/embed\/#?secret=TO63AjvTm1\" width=\"600\" height=\"338\" title=\"&#8222;Het onstaan&#8220; &#8211; De Leemputten - Genieten in de natuur\" data-secret=\"TO63AjvTm1\" 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:\/\/de-leemputten.nl\/wp-includes\/js\/wp-embed.min.js\n<\/script>","description":"Het ontstaan 1892 De geschiedenis van de Leemputten begint in 1892, toen in Groenlo de Steenfabriek werd geopend. Voor de productie was veel leem nodig, dat werd afgegraven in Zwolle. Tot 1931 gebeurde het afgraven met de hand (echt waar). Daarna nam een baggermachine het zware werk over. Rond 1898 werd er zelfs een kleine [&hellip;]","thumbnail_url":"https:\/\/de-leemputten.nl\/wp-content\/uploads\/2025\/04\/Treintje_met_arbeiders-1.webp","thumbnail_width":813,"thumbnail_height":491}