Rome’s volcano is slowly stirring
The Alban hills sit some 30km outside Rome, and much of the tuff (consolidated volcanic ash) used to build in the Eternal City was quarried here in this volcanic field (an area with lots of small eruptions of varied types spread over time rather than a repeatedly built up and exploded cone shaped peak and crater system) out of the remnants of a series of eruptions that ended some 36,000 years ago.













