Gunnar Heinsohn: The stratigraphy of Rome - benchmark for the chronology of the first millennium CE

No apartments were built in Rome for 700 years, from 230 to 930 CE!

No latrines were built in Rome for 700 years, from 
230 to 930 CE!

No aqueducts were built in Rome for 700 years, from 
230 to 930 CE!

Gunnar Heinsohn: Tenth Century collapse
Gunnar Heinsohn: Ephesus in the 1st Millennium
Gunnar Heinsohn's latest: Wrecked Metropolises of the 1st Millennium - acomparison
Ruth Dwyer: the comet of 536 and the Ravenna mosaics
CO2 emissions are ruining C14 readings