Location information

Potniae

Across the Asopus, about ten stades distant from the city, are the ruins of Potniae, in which is a grove of Demeter and the Maid. The images at the river that flows past Potniae. . . they name the goddesses. At an appointed time they perform their accustomed ritual, one part of which is to let loose young pigs into what are called “the halls.” At the same time next year these pigs appear, they say, in Dodona.

Perseus: Pausanias, Description of Greece, Boeotia
• http://www.perseus.tufts.edu/cgi-bin/ptext?lookup=...