1951: Shepherds in the mountains of Wales gather their flocks for shearing

Sheep farmer Pyrs Williams with his flock at Hafod-y-Llan.

Image: Grace Robertson/Picture Post/Hulton Archive/Getty Images

Named for Snowdon, the country’s highest peak, the Welsh region of Snowdonia is a land of open, mountainous terrain and glacially carved valleys.

With climate and soil unsuitable for most agriculture,...