Archaeologists have made a remarkable discovery beneath the shimmering waters of Lake Issyk-Kul in eastern Kyrgyzstan, uncovering traces of a medieval city that vanished after a catastrophic earthquake in the 15th century. The submerged settlement, once a thriving commercial hub on the legendary Silk Road, offers a haunting glimpse into a civilization that disappeared in an instant, drawing comparisons to the fate of ancient Pompeii.
The discovery represents one of the most significant underwater archaeological finds in Central Asia, shedding light on the region's medieval past and the devastating natural forces that shaped its history. The researchers from the Russian Academy of Sciences believe the city served as an essential stopover for merchants traveling between China and the Mediterranean, facilitating the exchange of silk, spices, precious metals and cultural ideas that defined the medieval world, reports the Daily Mail.
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Shallow Depths Reveal Medieval Treasures
The excavation focused on the Toru-Aygyr complex at the northwestern shore of Lake Issyk-Kul, where researchers surveyed four underwater zones at remarkably shallow depths of just three to thirteen feet below the surface. According to Heritage Daily, these accessible depths have allowed archaeologists to document an extensive array of medieval structures and artifacts that paint a vivid picture of daily life in this lost city.
In the first zone, divers discovered numerous fired-brick structures, including one containing a massive millstone used for crushing and grinding grain into flour. The presence of this industrial equipment suggests the settlement supported a sophisticated economy with specialized facilities for food production. Collapsed stone structures and wooden beams scattered across the lake floor provide additional evidence of the city's sudden demise.
Perhaps most intriguing are the remains of what researchers believe was a public building that possibly served as a mosque, bathhouse or madrassa, reflecting the Islamic character of the medieval settlement. Valery Kolchenko, researcher at the National Academy of Sciences of the Kyrgyz Republic and expedition leader, described the site as "a city or a major trading hub on a key section of the Silk Road."
The millstone found in the medieval city in shallow water beneath Lake Issyk-Kul in Kyrgyzstan. (Russian Academy of Sciences)
A Muslim Necropolis and Sacred Burial Traditions
The second underwater zone revealed a 13th to 14th century Muslim necropolis, where burials have preserved signs of traditional Islamic rituals. The skeletons face north with their faces turned toward the Qibla, the direction Muslims turn during prayer, providing compelling evidence of the settlement's religious practices. According to the Russian Geographical Society, which funded the project, "all this confirms that an ancient city really once stood here."
The third zone showed evidence of the settlement's later expansion, including additional buildings and an earlier burial ground that was eventually overbuilt by new structures as the city grew. This layering of construction suggests the settlement flourished for several generations before its sudden destruction.
In the fourth zone, archaeologists uncovered round and rectangular structures made of mudbrick, along with layers of buried soil that chronicle the city's development over time.
Samples from the site have been sent for accelerator mass spectrometry dating, a highly accurate method that can determine the age of organic materials down to specific decades. This analysis will provide definitive answers about when the city was built and how long it thrived before disaster struck.
Lake Issyk-Kul in Kyrgyzstan, where archaeologists have discovered traces of a medieval city submerged beneath its waters. (Dan Lundberg/CC BY-SA 2.0)
Catastrophe Strikes a Thriving Silk Road Settlement
Lake Issyk-Kul, located in the western Tianshan Mountains, is an enormous saline lake with a maximum depth of 2,192 feet, making it the eighth-deepest lake in the world. The lake has no known outflow, although some experts claim it connects to a local river through an underground channel. Surrounded by dramatic mountain peaks, the lake level has risen dramatically since ancient and medieval times, which explains why the ruins now lie underwater.
The city met its end at the beginning of the 15th century when a devastating earthquake struck the region. Kolchenko explained that the disaster was comparable to the catastrophe that befell Pompeii, causing the settlement to sink beneath the rising waters. "According to our assessment, at the time of the disaster, the residents had already left the settlement," he noted, suggesting that warning signs may have prompted an evacuation before the final destruction.
The earthquake fundamentally changed the region's demographics and economic structure. "After the earthquake disaster, the region's population changed drastically, and the rich medieval settlement civilization ceased to exist," Kolchenko said. Nomadic peoples replaced the urban civilization, and today the shoreline of Lake Issyk-Kul is dotted with small villages rather than the prosperous trading cities that once flourished there.
The discovery adds to our understanding of how natural disasters have shaped human civilization throughout history. Similar to other submerged cities around the world, the settlement beneath Lake Issyk-Kul serves as a sobering reminder of nature's power to erase even the most prosperous communities. The excavation, conducted jointly by the Institute of Archaeology of the Russian Academy of Sciences with the National Academy of Sciences of Kyrgyzstan, will form the basis for future research and scientific publications aimed at preserving Issyk-Kul's underwater heritage.
Top image: Marine archaeologist holds up one of the finds under the water of Lake Issyk-Kul, Kyrgyzstan. Source: Russian Academy of Sciences
By Gary Manners
References
Heritage Daily. 2025. Traces of submerged city discovered beneath Lake Issyk-Kul. Available at: https://www.heritagedaily.com/2025/11/traces-of-submerged-city-discovered-beneath-lake-issyk-kul/156372
Mail Online. 2025. The real Atlantis? Scientists discover traces of a submerged city hidden beneath the surface of a lake in Kyrgyzstan. Available at: https://www.dailymail.co.uk/sciencetech/article-15290723/Atlantis-traces-submerged-city-lake-Kyrgyzstan.html
