26 November 2025 The Future is the Product of the Past

1,500-year-old secret underground passage uncovered in Istanbul

During the ongoing excavations in the ruins of Saint Polyeuktos Church in Istanbul’s Saraçhane neighborhood, which was destroyed during the Latin invasion, a 1,500-year-old underground passage has been discovered.

A previously unknown underground passage about 20 meters (65 feet) from the nearby Haşim Işçan Passage was discovered. The carved marble blocks and reliefs in the underground passage, which contains mosaics and stone inlays, have impressed researchers.

Mahir Polat, Deputy Secretary-General of the Istanbul Metropolitan Municipality (IBB), stated that the structure is an excellent example of the city’s architecture that has withstood the test of time and the wrath of earthquakes.

“What is one of the most important aspects of this discovery of a 1,500-year-old passage? Dozens of tremors have passed in these 1,500 years in Istanbul, which is currently struggling with earthquake risk. This structure has managed to survive all these earthquakes. Türkiye should learn the secret and have knowledge of this,” Polat explained.

The 1,500-year-old underground tunnels discovered in Istanbul, Türkiye. Photo: DHA Photo
The 1,500-year-old underground tunnels discovered in Istanbul, Türkiye. Photo: DHA Photo

Polat pointed out that the main structure of St. Polyeuktos was destroyed, but its infrastructure remains intact. “The earthquake memory of the city is also here. If you want to see Istanbul’s earthquake memory, what happened in the Fatih district is a good example,” he added.



📣 Our WhatsApp channel is now LIVE! Stay up-to-date with the latest news and updates, just click here to follow us on WhatsApp and never miss a thing!!



Reminding that civil engineers and scientific consultants who specialize in earthquakes also assisted in the municipality’s excavation works, Polat stated that the experts would also share a report documenting the earthquakes the area witnessed in the past.

“The mortar with a mixture known as Horasan mortar from the period. We know it is important in terms of the technology of that period. We also examined the surface samples of the structure, such as stone, plaster, and possible gypsum, in the laboratory to determine their composition and archaeometry,” Polat added.

During the excavation works in the area, apart from the statue, the teams also found 681 bronze coins, stamped bricks, marble pieces, ceramics, oil lamps, glass, and metal artifacts.

Related Articles

A well-preserved comb discovered in a 4th-century rare Alemannic chamber grave in Germany

4 September 2024

4 September 2024

During a rescue excavation in the center of the village of Gerstetten, located in the Heidenheim district of southwestern Germany,...

5,000-year-old Settlement Unearthed in Al Mudhaibi, Oman

3 January 2023

3 January 2023

The Oman News Agency announced that a 5,000-year-old settlement was discovered during archaeological excavations at the Al Gharyein archaeological site...

Earliest evidence for intestinal parasites in the UK came from Stonehenge

20 May 2022

20 May 2022

Researchers think they have discovered the earliest evidence for intestinal parasites in the UK. Ancient poop found at the site...

An Amazing Discovery in the 1900-year-old Rock Church, – Sand Dollar Fossil

5 March 2024

5 March 2024

Located in the eastern province of Diyarbakır’s Eğil district, the rock church, the walls of which are decorated with different...

Ancient Three Fortresses: Layered Defense on Egypt’s Eastern Border at Tell Abu Saifi

11 May 2025

11 May 2025

Archaeological excavations at the strategically significant Tell Abu Saifi site in North Sinai have unearthed compelling evidence of Egypt’s long-standing...

Rock Ship of Masuda, Japan’s mysterious monolith

17 April 2023

17 April 2023

Located in the Takaichi District of Nara Prefecture, Japan, the village of Asuka is famous for its mysterious stones. The...

Archaeologists Discovered Submerged Stoa Complex in Ancient Salamis, Greece

27 October 2023

27 October 2023

Archaeologists exploring the east coast of Salamis, the largest Greek island in the Saronic Gulf, discovered a large, long, and...

The 7th-Century Lombard Kings’ Tombs Found in Pavia, Italy

24 December 2024

24 December 2024

The excavations, conducted between September and October by the Catholic University, uncovered numerous burials attributed, on the one hand, to...

1st Century BCE Medusa Mask Mold Discovered in Ancient Finziade, Sicily

24 January 2025

24 January 2025

At the Finziade archaeological site in the Sicilian town of Licata, archaeologists have discovered a mask mold that could represent...

1,300-year-old shipwreck found in southwest France

19 June 2022

19 June 2022

Archeologists in France have discovered the wreck of a ship that navigated the Garonne river in southwestern France in the...

A monumental Etruscan tomb discovered in the necropolis of San Giuliano, north of Rome

25 February 2024

25 February 2024

After years of work, archaeologists discovered an impressive Etruscan tomb partially hidden underground in the rock-cut necropolis of San Giuliano...

In France, a burial with six ankle bracelets was uncovered

22 December 2022

22 December 2022

An individual bedecked in copper jewelry was discovered during the excavation of a protohistoric necropolis in Aubagne, southeastern France. The...

Excavations at the site in the coastal city of São Luís, Brazil uncovered thousands of artifacts left by ancient peoples up to 9,000 years ago

4 February 2024

4 February 2024

Archaeologists unearthed 43 human skeletons and more than 100,000 artifacts at an excavation site in the coastal city of São...

3,500-Year-Old Human-Bodied, Eagle-Headed Seal Discovered in Central Türkiye

9 September 2025

9 September 2025

Archaeological excavations at Karahöyük in central Türkiye have led to a remarkable discovery: a 3,500-year-old human-headed, eagle-bodied seal. According to...

Archaeologists unearthed fresh evidence that bedbugs came to Britain with the Romans

3 February 2024

3 February 2024

Archaeologists working the Roman garrison site of Vindolanda in Northumberland, south of Hadrian’s Wall, have discovered new proof that the...