See:
- Marian Holland McAllister: The Excavations at Ancient Halieis: The fortifications and adjacent structures, Indiana University Press, 2005
- https://www.academia.edu/3498326/The_Prehistoric_Remains_of_the_Acropolis_at_Halieis_A_Final_Report
See:
Prehistoric finds of Early Helladic I: (3100 BC - 2700 BC)
Necropolis of ancient Helieis - Porto Cheli.
Several submerged structures (Porto Cheli)