1.0Museo de Ecología Humanahttps://museoecologiahumana.org/en/rich600338<blockquote class="wp-embedded-content" data-secret="cCmRgetH4j"><a href="https://museoecologiahumana.org/en/obras/traditional-smuggling-ii/">Traditional smuggling (II)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://museoecologiahumana.org/en/obras/traditional-smuggling-ii/embed/#?secret=cCmRgetH4j" width="600" height="338" title="“Traditional smuggling (II)” — Museo de Ecología Humana" data-secret="cCmRgetH4j" 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://museoecologiahumana.org/wp-includes/js/wp-embed.min.js </script> https://museoecologiahumana.org/wp-content/uploads/2026/10/Imagen15.jpg557743The oldest backpacks were made of sackcloth which was very resistant. Later, cloth backpacks were replaced by laminated plastic sacks which sealed hermetically and could be used as floats to cross the river. The backpack was fastened to the body with shoulder straps and to reduce the risk of cuts from the straps on the... View Article