Karadeniz Ereğli in the context of "Heraclides Ponticus"

Zonguldak (Turkish pronunciation: [zoŋˈguɫdak]) is a city of about 100 thousand people in the Black Sea region of Turkey. It is the seat of Zonguldak Province and Zonguldak District. It was established in 1849 as a port town for the nearby coal mines in Ereğli. The current mayor is Tahsin Erdem, representing the CHP.

Heracles Peninsula (Ukrainian: Гераклійський півострів, romanized: Herakliiskyi pivostriv, Russian: Гераклейский полуостров, romanized: Gerakleyskiy poluostrov) is a triangular headland in Black Sea at the southwestern portion of Crimea. It is distinguished by its northern edge at the Bay of Sevastopol (continuing by Chorna River) and its eastern edge at the Balaklava Bay (including the Valley of Balaklava). Most of the peninsula is heavily urbanized and occupied by the city of Sevastopol.

The name reminiscent with a divine hero of the Ancient Greece has in fact derived from another ancient Greek city Heraclea Pontica (today Karadeniz Ereğli (Turkish variant)). The Greek colonists founded the ancient city of Chersonesus, the ruins of which to this day may be found in Sevastopol. Other names of the peninsula include Trachea or Irakli. The peninsula was an agricultural district of Chersonesus also known as Chora (Greek: χώρα).

Ereğli District is a district of the Zonguldak Province of Turkey. Its seat is the city of Karadeniz Ereğli. Its area is 736 km, and its population is 175,309 (2022).

Heraclea Pontica (/ˌhɛrəˈkliːə ˈpɒntɪkə/; Ancient Greek: Ἡράκλεια Ποντική, romanized: Hērákleia Pontikḗ; Attic Greek: [hɛːrákleːa pontikɛ́ː], Koine Greek: [(h)e̝ˈraklia pontiˈke̝]), known in Byzantine and later times as Pontoheraclea (Greek: Ποντοηράκλεια, romanized: Pontohērakleia), was an ancient city on the coast of Bithynia in Asia Minor, at the mouth of the river Lycus. The site is now the location of the modern city Karadeniz Ereğli, in the Zonguldak Province of Turkey.