Monte Carbolino and Norba are two nearby polygonal-wall sites in Lazio's Lepini Mountains. Norba was founded as a Roman colony in 385 BC, while the video says Monte Carbolino has yielded no Roman coins, amphorae or comparable Roman finds. It describes both sets of walls as commonly dated to the fifth century BC, then argues that Monte Carbolino was abandoned before Roman expansion and may therefore be older. The video also highlights the quarry threat to Monte Carbolino. Its older-date conclusion is the presenter's interpretation, not an established archaeological date.
Monte Carbolino and Norba: the video questions conventional wall dating

Site mentioned
Key facts
- Monte Carbolino and Norba are nearby fortified sites in Lazio's Lepini Mountains, both featuring polygonal masonry.
- Norba was founded as a Roman colony in 385 BC and had temple remains. The video says Monte Carbolino has yielded no Roman coins, amphorae or comparable Roman finds.
- The video describes the polygonal walls at both sites as generally dated to the fifth century BC.
- The video argues that Monte Carbolino was abandoned before Roman expansion and that its walls may therefore be older. The absence of Roman finds does not by itself establish an earlier construction date.
- The video highlights the threat of quarry expansion to Monte Carbolino.
Sources
The Italian city that stood up to Romebbc.com
Perched on the edge of a cliff in the Lepini Mountains in western Italy's Lazio region, Norba, now in ruins, is one of the country's best ...
Sermoneta. Cyclopean Walls of Monte Carbolinodiscoverplaces.travel
On Monte Carbolino in Sermoneta you can see a series of terracing made with polygonal or cyclopean walls. The walls follow the slope and are ...
Norbaen.wikipedia.org
It is situated 1 mile northwest of the modern town of Norma, on the western edge of the Volscian Mountains or Monti Lepini. ... It became a Roman colony in 492 BC ...
The Cyclopean Cities of Ancient Latiumunchartedruins.blogspot.com
Massive cyclopean walls encircle towns and villages, their stones darkened by the passing of centuries and millennia. One can never get used to them.
Norba, Latiumroamintheempire.com
Located on a plateau atop the Monti Lepini (Volscian Mountains), an anti-Apennine mountain range overlooking the Agro Pontino (Pomptinus Ager in antiquity)
Advances in Safety, Reliability and Risk Managementroutledge.com
A Monte Carlo approach for evaluation of availability and failure ... Risk and hazard analysis. A modelling framework for model based risk analysis
Advances in Safety, Reliability and Risk Managementcrr.umd.edu
... threat, e.g., from high- speed armor-piercing kinetic energy projectiles, shaped charges, explosively formed projectiles or improvised ...
Ancient Norba Archaeological Park: Cyclopean Walls and ...italytripper.com
The Ancient Norba Archaeological Park in Norma preserves authentic 5th-century BC Roman ruins, featuring perfectly fitted Cyclopean walls ...
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