The area and the river Larissos, named Larissos, by Pelasgians or pre-Hellenics. Indeed archaeologist Strabon says that beside the River Larissos, there was a settlement of pre-Hellenics near the village of Lapa.
In mythology, Larissa was the mother of the Achaean and Hercules drank from the water of the river. The ancients called the Larissos and “Vouprasio”. On the left shore of the river, there was Vouprasio owned by Ilia.
Larissos is the recognized boundary between Achaia and Ilia and was frequently the field of battles between Achaeans and Ilians, who inhabited the two neighbors Dymaion and Vouprasia.
LEGEND ABOUT LARISSOS
During Turkish occupation the Karosi and Mpada villages communicated with each other via an underground tunnel, which permeated the Larissos river. Children from Karosi and the monk who taught letters were going to a secret school which was in Mpada.
But every time the monk was reaching first. Wondering how he was achieving this, the Karousopoula watched the monk and saw him entering the tunnel.
The next day, they got candles and started to cross the tunnel to reach quickly before the monk in Mpada. But the candles blowed out and the children were drowned in the river. The monk was using light to see through the dark tunnel without danger of blowing out. The legend continues saying that the children ‘s fezzes were found in source of Chatzouri (Daybreak).