This 500-600km long earth fortress stretches from west of old
center of Baruun-Adarga Soum of Khentii province passing north of Lake Sain Tsagaan
through Norovlin Soum, Bayandun Soum, Dornod province and Khermyn Khudag in a
terrain of 3 Soums, Tsagaan-Ovoo, Sergelen, Gurvanzagal. It discontinues at
several parts and only some parts or 300km of the fortress is in a Mongolian
territory. There are some small earth fortresses measuring 40m x 50m where
guards sat in.
For instance, Durvuljin Buudal, Ulzyn Undur, Dovyn Kherem, Mogoin
Adagiin Kherem, Uguumuryn Kherem, Delgerekhyn Tal and Bayanbulagyn Kherem. It
is said that it takes midday or a whole day to travel between each fortress.
Some of them are 8-12km apart from each other. There were no traces that
someone lived in the fortress, but vase and bowl remains were found. Fortresses
like them are said to have found in large numbers along Chinghisyn Dalan. It is
also said that fortresses of midday are shape triangular and fortresses of
whole day are shaped square. In southern Mongolia there are also places like
it. For example, in Nomgon Soum, Khurmen Soum, Bayandalay Soum and Noyon Soum
of Umnugobi province, there is a long earth fortress also called Chinghisyn
Dalan. Researchers suppose that these fortresses once were a border of any
foreign country. But it hasn’t been researched completely until today.