Servian Wall
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The Servian Wall is an ancient Roman defensive barrier constructed around the city of Rome in the early 4th century BC. The wall was built of volcanic tuff and was up to 10 m in height in places, 3.6
A preserved section of Servian Wall next to Termini railway station.
The Porta Esquilina was originally a gateway in the Servian Wall. In the later Roman Empire it became known as the Arch of Gallienus, and was the starting point of the via Labicana and the via Tiburtina.
The Servian Wall at Via di Sant Anselmo
In the Piazza Manfredo Fanti
Tuff
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Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash lithifies into solid rock. Rock that contains greater than 75% as
Servian Wall
…Italian: Mura Serviane) is an ancient Roman defensive barrier constructed around the city of Rome in the early 4th century BC. The wall was built of volcanic tuff and was up to 10 m (33 ft) in height in places, 3.6 m (12 ft) wide at its base, 11 km (6.8 mi) long, and is believed to have had 16 main gates, of which…
Tuff from the Guadalupe Formation in Luzon, Philippines
Cliff face of welded tuff pockmarked with holes — some natural, some man-made — from Bandelier National Monument, New Mexico
Etruscan tuff blocks from a tomb at Banditaccia, Italy
A house constructed of tuff blocks in Rieden, Rhineland-Palatinate, in the Volcanic Eifel region, Germany