Passage 2.34.6
ἔστι δὲ ὁδὸς ἔς Ἑρμιόνα ἐκ Τροιζῆνος κατὰ τὴν πέτραν ἣ πρότερον μὲν ἐκαλεῖτο Σθενίου Διὸς βωμός, μετὰ δὲ Θησέα ἀνελόμενον τὰ γνωρίσματα ὀνομάζουσιν οἱ νῦν Θησέως αὐτήν. κατὰ ταύτην οὖν τὴν πέτραν ἰοῦσιν ὀρεινὴν ὁδόν, ἔστι μὲν Ἀπόλλωνος ἐπίκλησιν Πλατανιστίου ναός, ἔστι δὲ Εἰλεοὶ χωρίον, ἐν δὲ αὐτῷ Δήμητρος καὶ Κόρης τῆς Δήμητρος ἱερά· τὰ δὲ πρὸς θάλασσαν ἐν ὅροις τῆς Ἑρμιονίδος ἱερὸν Δήμητρός ἐστιν ἐπίκλησιν Θερμασίας.
The road from Troezen to Hermione passes by a rock, which was formerly called the Altar of Zeus Sthenius, but after Theseus took up the tokens (left there), people today call it the Rock of Theseus. Alongside this rock, as one continues along the mountainous road, there is a temple to Apollo, surnamed Platanistius, and also a place called Eileoi, in which there are sanctuaries of Demeter and of her daughter Kore. Near the sea, at the borders of the territory of Hermione, there is also a sanctuary of Demeter, who is surnamed Thermasia.