Volcano in Chaîne des Puys reveals its inner workings after pozzolan quarrying

The Lemptégy volcano, dormant for 30,000 years, reveals its inner layers after pozzolan quarrying.

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The fact

A UNESCO World Heritage site, it is the only place in Europe where visitors can descend into a crater.

It provides a unique view of volcanic strata and bombs.

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Auto-synthesis from 1 media source · identified on July 16, 2026