Zonguldak is Türkiye's hard-coal capital, a province on the Western Black Sea coast that runs from Gökgöl Cave to the Cehennemağzı Caves, and from the mining museum to the Filyos Port. The Devrek walking stick, Karadeniz Ereğli Ottoman strawberry, Çaycuma buffalo yoghurt and Zonguldak zılbıt dish are registered.

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Places to Visit in Zonguldak

6 places worth seeing in Zonguldak, from historic monuments to natural wonders, grouped by type. Open any of them on the map with a single click.

  • 2 Ancient City
  • 1 Museum
  • 1 Nature
  • 1 Attraction
  • 1 Cultural
Gökgöl Cave Photo: İncelemeelemani (CC BY-SA 4.0) · Source
Nature

Gökgöl Cave

An active stalactite cave 3,350 metres long in the Üzülmez area; it is the cave with the largest visitor area in Türkiye and has an 875-metre walkway.

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Panorama of Karadeniz Ereğli Photo: Rehber (CC BY-SA 4.0) · Source
Attraction

Karadeniz Ereğli

A district of Zonguldak with an area of 736 km² and 80 km of coastline; it is known for its large ports and the Erdemir plants.

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Ancient City

Cehennemağzı Caves

Three adjoining caves in the ancient Achelon Valley in the centre of Ereğli, also called the Church Cave or Hercules Cave; the first cave has a mosaic floor and apse remains.

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Museum

Zonguldak Mining Museum and Coal Experience Mine

Established in 2016 in the Çınartepe neighbourhood, this is Türkiye's first hard-coal mining museum, together with the TTK training-mine gallery.

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Ancient City

Filyos (Tios)

The ancient settlement of Tios, in the town of Filyos in Çaycuma, where the Filyos Port project is being built.

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Cultural

Devrek

A district of 953 km²; it is known for the Devrek walking stick, its kiren and its baklava.

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Getting to Know Zonguldak

Zonguldak is a province of 3,341 km² in the Western Black Sea part of the Black Sea region, on a coast where the mountains plunge straight into the sea. The province is known for its port and its hard-coal mines: Türkiye’s richest hard-coal deposits are here. Coal has shaped the city’s economy and identity for a century, and in recent years its sources of income have begun to diversify.

Foremost among the province’s natural assets is Gökgöl Cave: in the Üzülmez area, at the 4th km of the Zonguldak exit of the Zonguldak–Ankara highway, the cave is 3,350 metres long including its branches; with its 875-metre walkway it is the cave with the largest visitor area in Türkiye, and it contains every kind of dripstone formation, including stalactites, stalagmites, columns and flag-shaped dripstones. The Cehennemağzı Caves in Karadeniz Ereğli, in the ancient Achelon Valley, consist of three adjoining caves; the entrance floor of the first cave is covered with mosaic, and it was used as a place of worship in the early Christian period.

The Zonguldak Mining Museum and Coal Experience Mine, which tells the story of coal, was established in 2016; in the Çınartepe neighbourhood, it consists of a gallery that TTK uses as a training mine and the museum building next to it, and it is Türkiye’s first hard-coal mining museum. The districts of the province are Merkez, Alaplı, Çaycuma, Devrek, Karadeniz Ereğli, Gökçebey, and Kilimli and Kozlu (which became districts in 2012).

When to Go

Zonguldak has a mild but very wet Black Sea climate; rain falls throughout the year. Averages for 1938–2025 from the Turkish State Meteorological Service:

Month Avg. high Avg. low Rainfall Rainy days
January 9.3 °C 3.6 °C 139 mm 18
February 9.6 °C 3.6 °C 100 mm 16
March 11.0 °C 4.7 °C 98 mm 15
April 14.9 °C 8.1 °C 66 mm 12
May 18.9 °C 12.2 °C 55 mm 11
June 23.1 °C 16.0 °C 74 mm 9
July 25.3 °C 18.1 °C 68 mm 7
August 25.5 °C 18.3 °C 79 mm 7
September 22.5 °C 15.5 °C 103 mm 8
October 18.8 °C 12.3 °C 147 mm 12
November 15.3 °C 9.0 °C 140 mm 14
December 11.7 °C 5.8 °C 154 mm 17

The best time is May to September. The caves can be visited all year round; in the wet seasons, bring a raincoat.

How to Get to Zonguldak

By air: Zonguldak Airport was closed in 2002 after being established in 1999, and re-entered service in 2007; it has an annual capacity of 500,000 passengers and a concrete runway measuring 2,130 × 45 metres.

By road: It lies on the Zonguldak–Ankara highway and the Black Sea coastal road; Alaplı is 58 km from the provincial centre.

Zonguldak Area by Area

  • Merkez, Kozlu and Kilimli: the Mining Museum, Gökgöl Cave, the ports and the coal mines.
  • Karadeniz Ereğli: 736 km² and an 80 km coastline; the Cehennemağzı Caves, the Erdemir iron and steel plants and the large ports; the Ottoman strawberry.
  • Çaycuma: the town of Filyos (the ancient settlement of Tios, Filyos Port), Çaycuma buffalo yoghurt.
  • Devrek: 953 km²; the Devrek walking stick, baklava and kömeci.
  • Alaplı and Gökçebey: Alaplı is a coastal town (fishing and hazelnuts); Gökçebey is the least populated district in the province.

Suggested Itineraries

Day 1 – Central Zonguldak: The Mining Museum and Coal Experience Mine; Gökgöl Cave in the afternoon.

Day 2 – Karadeniz Ereğli: The Cehennemağzı Caves and the coast; Ottoman strawberries in the evening.

Day 3 – Devrek and Çaycuma: Walking-stick workshops, baklava and kömeci in Devrek; buffalo yoghurt in Çaycuma; the seashore at Filyos.

Zonguldak Cuisine

Zonguldak cuisine has been shaped by its mining tradition. Delicacies with registered geographical indications: Zonguldak zılbıt yemeği, Zonguldak malay yemeği, Devrek beyaz baklavası (Devrek white baklava), Devrek kömeci (cevizli) (walnut-filled kömeci) and Çaycuma manda yoğurdu (Çaycuma buffalo yoghurt). Products: Karadeniz Ereğli Osmanlı çileği (Karadeniz Ereğli Ottoman strawberry).

Handicrafts

The Devrek bastonu (Devrek walking stick), Devrek kireni (Devrek kiren) and Elpek bezi (Elpek cloth) have registered geographical indications.

Practical Tips

  • It is cool inside Gökgöl Cave; wear a light top layer.
  • Check the current visiting hours for the gallery tour at the Mining Museum.
  • You need a vehicle to see Karadeniz Ereğli and Devrek on the same day.

Districts of Zonguldak

Zonguldak province has 8 districts. Explore the places to visit, local dishes and transport in each one.

What to Eat in Zonguldak

All dishes →
  • Zonguldak Zılbıt Yemeği

    A regional dish with a registered geographical indication.

  • Zonguldak Malay Yemeği

    A regional dish with a registered geographical indication.

  • Devrek Beyaz Baklavası (Devrek white baklava)

    Baklava with a registered geographical indication.

  • Devrek Cevizli Kömeci (walnut-filled kömeci)

    A pastry with a registered geographical indication.

  • Çaycuma Manda Yoğurdu (Çaycuma buffalo yoghurt)

    Yoghurt registered with a geographical indication (designation of origin).

What to eat in Zonguldak: the full food guide

Zonguldak: Frequently Asked Questions

What are the best places to visit in Zonguldak?

The main stops are Gökgöl Cave, the Cehennemağzı Caves, the Zonguldak Mining Museum, Karadeniz Ereğli and Devrek.

What is Zonguldak famous for?

Hard coal, the Devrek walking stick, the Ottoman strawberry and Çaycuma buffalo yoghurt.

Where is Gökgöl Cave?

It is in the Üzülmez area of Zonguldak, at the 4th km of the Zonguldak exit of the Zonguldak–Ankara highway.

When was the Zonguldak Mining Museum established?

It was established in 2016 and is Türkiye's first hard-coal mining museum.

When is the best time to visit Zonguldak?

May to September is the best time; rain falls throughout the year.

More from the Zonguldak Guide

Other Provinces in the Black Sea Region

Sources

The information in this guide has been compiled from and checked against the sources below (last checked: 8 October 2026). If you spot an error, please let us know.

  1. Vikipedi – Zonguldak
  2. Meteoroloji Genel Müdürlüğü – Zonguldak il istatistikleri
  3. Vikipedi – Gökgöl Mağarası
  4. Vikipedi – Cehennemağzı Mağarası
  5. Vikipedi – Karadeniz Ereğli
  6. Vikipedi – Çaycuma
  7. Vikipedi – Devrek
  8. Vikipedi – Zonguldak Havalimanı
  9. TÜRKPATENT – Devrek Bastonu
  10. TÜRKPATENT – Karadeniz Ereğli Osmanlı Çileği
  11. TÜRKPATENT – Çaycuma Manda Yoğurdu
  12. Vikipedi – Türkiye'de tescilli coğrafi işaretler listesi

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