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Amazing underground art, made by an insurance salesman! -

Nestling in the foothills of the Alps in northern Italy, 30 miles from the ancient city of Turin, lies the valley of Valchiusella. Peppered with medieval villages, the hillside scenery is certainly picturesque.

But it is deep underground, buried into the ancient rock, that the region's greatest wonders are concealed.

Few have been granted permission to see these marvels.

Indeed, the Italian government was not even aware of their existence until a few years ago.

But the 'Temples of Damanhur' are not the great legacy of some long-lost civilisation, they are the work of a 57-year-old former insurance broker from northern Italy who, inspired by a childhood vision, began digging into the rock.