1.0UNITED IN ACTIONhttps://unitedinaction.eu/plkacperhttps://unitedinaction.eu/pl/author/kacper/rich600338<blockquote class="wp-embedded-content" data-secret="CUArzd0OlM"><a href="https://unitedinaction.eu/pl/2025/08/19/trip-to-the-wieliczka-salt-mine/">Wycieczka do kopalni soli w Wieliczce</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://unitedinaction.eu/pl/2025/08/19/trip-to-the-wieliczka-salt-mine/embed/#?secret=CUArzd0OlM" width="600" height="338" title="„Trip to the Wieliczka Salt Mine” — UNITED IN ACTION" data-secret="CUArzd0OlM" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=https://unitedinaction.eu/wp-includes/js/wp-embed.min.js </script>https://unitedinaction.eu/wp-content/uploads/2025/08/img_20250827_wa0008-scaled.jpg19202560The volunteers had the opportunity to visit one of the most unique places in Poland – the Wieliczka Salt Mine, inscribed on the UNESCO World Heritage List. This extraordinary site, whose history dates back to the 13th century, has been astonishing visitors from all over the world for years with its beauty and the mysterious atmosphere […]