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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Created By
Status	Returning Series
Original Name	Iolo's River Valleys
First Air Date	May 6, 2025
Last Air Date	May 27, 2025
Seasons	1
Episodes	4
Episode Runtime	29min
Language	English
Original Language	English
Production Countries	—
Production Companies
Networks	BBC One Wales

S01E04

The Vale of Clwyd

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.

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