The coal buckles are extremely rare. Courtesy of Marina Kilunovskaya

In a remote part of Russia, near the border with Mongolia, an archaeological investigation has been excavating the graves of Xiongnu people, a nomadic group who lived in what’s now the Tuva Republic from about the 3rd century B.C. to the 1st century A.D. Some of the most striking finds have been in the graves of Xiongnu women, who were buried with fantastic belt buckles made of coal, jewels, and bronze, The Siberian Times reports.

The belt buckles are decorated with depictions of animals from fictional dragons to panthers, yaks, camels, and snakes.

A burial with the belt buckle. Courtesy of Marina Kilunovskaya

The coal buckles in particular are very rare. Marina Kilunovskaya, the archaeologist leading the project for the of theRussian Academy of Sciences’ Institute for the History of Material Culture, told The Siberian Times that there are only 10 known examples of these types of belt buckles. Kilunovskaya worked with the archaeologist Pavel Leus, a specialist of the Xiongnu period.

Xiongnu is a Chinese term from that period for nomadic, invading groups seen as a threat to China. In the period that these burials date to, a coalition of nomadic tribes from Central Asia were encroaching on Chinese territory. Chinese sources note that Xiongnu women fought alongside men, and the archaeological evidence backs that up. As Foreign Affairs reports, in at least 300 burials found across Asia, the remains of women show signs that they fought in battle. At least a quarter of the women found buried with weapons were active warriors. Both men and women wore elaborate belt buckles, decorated with animals both imaginary and real.

The bronze buckles have elaborate decorations. Courtesy of Marina Kilunovskaya

Excavations at this site, supported by The Society for the Exploration of Eurasia, began in 2015 and are still ongoing. The same area has many burials from the Scythian era, starting in the 2nd century B.C., through the Middle Ages.