The first use of drone-based lidar in Central Asia has enabled archaeologists to uncover details of two newly discovered medieval trade cities high in the mountains of Uzbekistan.

The team used this cutting-edge technology to map the archaeological scale and layout of the cities, which are among the largest ever documented in the mountainous parts of the Silk Road, a broad network of ancient trade routes that connected Europe and Eastern Asia.

The research, led by Michael Frachetti, professor of archaeology in Arts & Sciences at Washington University in St. Louis, and Farhod Maksudov, director of the National Center of Archaeology in Uzbekistan, was recently published in Nature.