See:
- Gerald P. Schaus: Stymphalos: The Acropolis Sanctuary, T. I, University of Toronto Press, 2014, p. 95
See:
Atena sanctuary at Stymfalia.
Ancient Stymphalos was renowned as the site of one of the Labors of Hercules, the slaying of the Stymphalian birds.
Ancient Theatre of Stymfalia