The Early Medieval Period
From the fifth to the seventh century AD the climate in Europe became harsher, with higher rainfall,
greater humidity and lower temperatures. The economic system of the ancient estates, the agricultural
holdings that formed the basis of the Roman economy, went into crisis. Many villages disappeared, and with
them the hill-top settlements built for defensive purposes. Most of the small clusters of houses were moved
to an altitude of between 300 and 600m above sea level. Tremona, which covered an area of around 4,200m2
at 640m above sea level, followed this trend identified by historians and archaeologists.