[1] Strait between Chalcis on Euboea and Boeotia
(Εὔριπος ὁ Χαλκιδικός; Eúripos ho Chalkidikós). This strait, 9 km in length between Chalcis on Euboea and Boeotia, with three narrows, lies at the approximate mid-point of the sound between Euboea and the Greek mainland (Anon. in GGM 1,105 § 29: ἡ τῶν Εὐβοέων θάλατττα). Originally, two channels ran through the most northerly narrows at Chalcis, one at the western shore, 0.5 m deep and 15 m wide,…