May 6, 2025 · 29m
Iolo Williams explores the Rheidol valley and looks for elusive pine martens. He’s also treated to views of red kites nesting in a village and explores a remote zinc mine.
Iolo's River Valleys
Iolo Williams explores four of Wales’s most stunning river valleys from sea to source, uncovering their hidden wonders and remarkable wildlife.
Season 1 Episodes
Browse every episode and jump into details.
May 13, 2025 · 29m
Iolo Williams explores the Dyfi Valley, from Ynyslas dunes and Cors Fochno bog to Ospreys at Cors Dyfi and wild Beavers near Machynlleth.
May 20, 2025 · 29m
Iolo explores fascinating woodlands, searches for Curlew chicks and uncovers the history of an ancient burial chamber nestled in the beautiful Conwy Valley.
May 27, 2025 · 29m
Iolo Williams explores the Vale of Clwyd, from coastal lizards and rare butterflies to a tame raven and elusive red squirrels, uncovering the valley's hidden wonders and wildlife.
Season 1 FAQ
Quick answers about this season's release timeline and episode lineup.
When did Iolo's River Valleys Season 1 premiere?
Iolo's River Valleys Season 1 premiered on May 6, 2025.
How many episodes are in Iolo's River Valleys Season 1?
Iolo's River Valleys Season 1 has 4 episodes.
What is the first episode of Iolo's River Valleys Season 1?
The season opens with Season 1 Episode 1, "The Rheidol Valley". It aired on May 6, 2025.
Go to Season 1 Episode 1