Pausanias Description of Greece 2.24.1

[1] The citadel they call Larisa, after the daughter of Pelasgus. After her were also named two of the cities in Thessaly, the one by the sea and the one by the river Pēneios. As you go up the citadel you come to the sanctuary of Hērā of the Height, and also a temple of Apollo, which is said to have been first built by Pythaeus when he came from Delphi. The present statue [ agalma] is a bronze standing figure called Apollo Deiradiotes, because this place, too, is called Deiras (Ridge). Oracular responses are still given here, and the oracle acts in the following way. There is a woman who prophesies, being debarred from intercourse with a man. Every month a lamb is sacrificed at night, and the woman, after tasting the blood, becomes inspired by the god.