Iain Stewart takes a walk through some of Scotland's most intriguing landscapes, revealing how human activity has shaped the land we see today.
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Iain Stewart visits Culbin Forest where tree planting has stabilised mobile sand dunes.
Iain Stewart discovers how the landscape of Glen Lui was shaped by its use as a deer estate.
Iain Stewart visits Pittenweem in the East Neuk of Fife.
Iain Stewart discovers the engineering and environmental challenges of re-routing the River Nith.