High in the Andes the mountains rise in sheer ridges, their flanks cut with cliffs and ravines, their summits capped with snow. 

 To the casual eye they seem forbidding, a landscape of rock and cloud where little could grow. Yet if you follow the river valleys upward into the Sacred Valley of the Incas you begin to see an extraordinary sight. The Inca Gardens of Ancient Peru. To tell us the story of the wonderful sight is Diarmuid Gavin, award winning garden designer.