A section of the
Running roughly parallel to the border between China and
Consisting of an earthen wall, a trench, and 34 structures, the wall and its construction are mentioned in some historical records dating from the 11th to 13th centuries, although the researchers are currently unable to provide a more accurate chronology. Noting that “the Mongolian Arc, despite its magnitude, has been largely overlooked in existing academic discourse,” the study authors combined satellite images, Chinese atlases, and Soviet maps with direct field observations to analyze the wall and its associated structures.
Their most striking finding was that the Mongolian Arc contains numerous large gaps, suggesting that it was built in a hurry and therefore never fully fortified. “One possible explanation for the gaps, which were points of vulnerability in the system, is that the Mongolian Arc was hastily built during the final years of the Jin dynasty as a defense against the expected invading Mongol armies,” write the researchers.
Despite the uncertainty surrounding the wall’s age, it seems likely that construction coincided with the rapid
An alternative idea presented by the researchers is that the Mongolian Arc was
Overall, the study authors are currently unable to make any definitive statements regarding the purpose of the Mongolian Arc, although they are planning to conduct more extensive excavations of some of the structures in an upcoming field season. This, they hope, will help them to determine the wall’s “construction dates and duration of use, and shed light on the activities of the people stationed in these enclosures.”
The study is published in the