1.0Afonydd Cymruhttps://afonyddcymru.cambrianweb.dev/cy/Afon Wysg - Afonydd Cymrurich600338<blockquote class="wp-embedded-content" data-secret="VrRGsW5wlt"><a href="https://afonyddcymru.cambrianweb.dev/cy/afon-aeron-2-2/">Afon Wysg</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://afonyddcymru.cambrianweb.dev/cy/afon-aeron-2-2/embed/#?secret=VrRGsW5wlt" width="600" height="338" title="“Afon Wysg” — Afonydd Cymru" data-secret="VrRGsW5wlt" 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://afonyddcymru.cambrianweb.dev/wp-includes/js/wp-embed.min.js
</script>
https://afonyddcymru.cambrianweb.dev/wp-content/uploads/2025/09/crickhowell-brigde-footings-scaled.jpg20481046At 126km long, the Afon Wysg (River Usk) is the longest river to flow entirely in Wales. Its Welsh name means "River abounding in fish" and it is to this day highly regarded for its brown trout. A new threat is emerging for all the river's fish species though....