Italian mainland cyclopean walls have traditionally been dated to the 400s BC based on the earliest Roman written records. But Romans themselves noted most platforms predated them. Academic research at sites south of Rome in Lazio now shows most buildings actually date to before 800 BC, roughly four centuries before Roman expansion. At least 7-9 platforms are securely dated older than the 800s BC, forcing a rethink of similar constructions across Italy.
Lazio research dates Italian cyclopean platforms to before 800 BC, challenging 400s BC dating

Key facts
- Italian mainland cyclopean walls are traditionally dated to the 400s BC based on the earliest Roman written records
- Romans themselves documented that most platforms existed before their arrival
- Academic research at platforms in Lazio, south of Rome, found most buildings date to before 800 BC, approximately 4 centuries before Roman expansion
- At least 7-9 platforms have been securely dated to be older than the 800s BC, raising questions about dating methods for similar works elsewhere in Italy
Sources
Cyclopean walls italy hi-res stock photography and images - Alamyalamy.com
Constructed as polygonal masonry (megalithic or cyclopean) & dated 5th-4th century BC ... An example of the cyclopean walls of the Italian Sanctuary of ...
Cyclopean masonry - Wikipediaen.wikipedia.org
BCE), gate visible to the left, surrounded by cyclopean walls (similar to Mycenae) dated to the 4th c. ... In Italy, polygonal masonry is particularly ...
Cyclopean masonry | Ancient, Stone, Architecture - Britannicabritannica.com
The citadel of Tiryns (c. 1300 bc) in Greece features such walls. They range in thickness from approximately 24 feet (7 metres) to as much as 57 ...
Italy's Mysterious Mycenaean-Like Cyclopean Walls - We the Italianswetheitalians.com
Dated on the basis of archaeological finds and ancient script mentions to as early as the 8th century B.C., most of the Cyclopean walls of ...
The Porta Saracena and the Cyclopean Walls, Segni - Italia.ititalia.it
Porta Saracena is the symbol of Segni, a small town near Rome with two millennia of history behind it. This gate opens along the polygonal masonry walls of the ...
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