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Documentary

All Episodes of Iolo's River Valleys

BBC One Wales

Browse all episodes of Iolo's River Valleys

All Episodes of 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.
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Season 1

  • The Rheidol Valley
    N/A/100 votes

    The Rheidol Valley

    Season 1 Episode 1 - Aired 5/6/2025

    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.

    Director: Unknown

    Writer: Unknown

  • The Dyfi Valley
    N/A/100 votes

    The Dyfi Valley

    Season 1 Episode 2 - Aired 5/13/2025

    Iolo Williams explores the Dyfi Valley, from Ynyslas dunes and Cors Fochno bog to Ospreys at Cors Dyfi and wild Beavers near Machynlleth.

    Director: Unknown

    Writer: Unknown