1.0MCQhttps://imagesdanslapierre.mcq.org/en/Jean Tanguayhttps://imagesdanslapierre.mcq.org/en/author/jeantanguay/rich600338<blockquote class="wp-embedded-content" data-secret="RwfMF9zg7w"><a href="https://imagesdanslapierre.mcq.org/en/discover/enhancement/">Heritage Value</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://imagesdanslapierre.mcq.org/en/discover/enhancement/embed/#?secret=RwfMF9zg7w" width="600" height="338" title="“Heritage Value” — MCQ" data-secret="RwfMF9zg7w" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! 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://imagesdanslapierre.mcq.org/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Providing the right information to the public is key to the protection of rock art sites around the world. Several strategies have been implemented to promote these sites, based on their historical significance, location and accessibility.https://imagesdanslapierre.mcq.org/wp-content/uploads/2019/01/valeur.jpg