How sheep are helping to preserve the ruins of Pompeii

A flock of grazing sheep is helping archaeologists to preserve the ancient ruins of Pompeii, the Roman city that was buried under metres of pumice and ash in the calamitous eruption of Mount Vesuvius in AD 79.

Archaeologists have uncovered only around two-thirds of the 66-hectare site at Pompeii since excavations began 250 years ago.

Preserving the unexplored sections of the ancient city against erosion by nature and time is a priority for those who manage the site.

"If grass and other plants grow in or on the ancient walls and houses this is a problem. So we try to have a sustainable approach to the whole environment in order also to avoid using substances then to avoid growing plants, having plants growing on the walls and ruins," said Gabriel Zuchtriegel, the director of the Pompeii Archaeological Park.

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https://www.cbc.ca/news/world/sheep-preserving-pompeii-ruins-italy-rome-1.6773489