The traditional narrative of the Silk Road often focuses on major trading capitals, caravanserais, and famous oases. But recent research in the mountains of southeastern Uzbekistan has shifted the focus to something different: a high-altitude city that may have been an industrial engine, with evidence of large-scale metallurgy. The work, supported by remote scanning technology (Lidar) mounted on drones, allowed for the identification of urban traces, fortifications, and structures that were previously unknown.
The main site, known today as Tugunbulak, is believed to have occupied an area of approximately 120 hectares and to have functioned between the 6th and 10th/11th centuries. Researchers estimate that it could have housed a population “in the tens of thousands,” a size capable of rivaling historical centers in the region. The significance is not just in the size: in a fortified area, they found remnants of furnaces and slag suggesting iron or steel production, directly linking it to the economic circuits of the Silk Road.
The existence of this “iron city” in the heart of the mountain range raises questions about how power and production were organized in medieval Central Asia. According to researchers, the finding places industry and territorial control “far outside” traditional agricultural poles, complicating the idea that economic dynamism was concentrated only in the plains and oasis cities. In other words: it was not just a transit corridor; there were also productive centers with urban scale in remote locations.
What they found and why it matters: a fortified high-altitude city linked to metallurgy
The research took place in a high mountain landscape, with deep canyons and steep slopes, where urbanization seemed unlikely. The application of Lidar allowed researchers to “see” through the ground cover and map in detail structures, terraces, roads, and fortifications, outlining an urban pattern that is not easily detected from the ground. This mapping revealed a settlement larger than expected for an environment at 2,000 to 2,200 meters above sea level, comparable in height to other famous mountain sites, though in a different historical and cultural context.
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What makes Tugunbulak unique is the industrial evidence. In a fortified structure with thick earthen walls, archaeologists found remnants of furnaces and kilns, interpreted as part of a facility where iron ore was processed to produce metal. The team is working on chemical analyses of the slag, a key byproduct, to accurately confirm the type of metal produced and its scale.
This industrial component is what “moves” the finding from local terrain to broader historical debate. If sustained production of iron or steel is confirmed, the site suggests that the Silk Road not only connected markets but also areas producing strategic inputs for tools, weapons, and construction. In the medieval context, having relevant metallurgy equates to having economic, logistical, and likely political power.
