Boli Fortress

　　  Boli Fortress is another Japanese military fortress discovered in China's Northeast, following the Dongning Fortress and Hutou Fortress. It is situated in the dense forests about three kilometers northwest of Boli County, covering an area of 47.4 square kilometers, and was built around 1940.

　　  Boli Fortress was an important Japanese aerial ammunition depot during the invasion of China, supplying the Japanese forces in the Northeast and North China theaters with aviation equipment and munitions. Along with five other nearby military airfields—Huzhu, Rongguang, Jixing, Shuanghe, and Boli East Mountain—it formed the second line of defense of the so-called "Eastern Maginot Line." It served as a crucial military base that secretly provided arms and air support to permanently control the Northeast for the first line of fortifications and the Japanese invaders.

　　  The fortress features 14 cave storage facilities, each approximately 80 meters long and 8 meters wide, equipped with electrical wiring, drainage systems, and ventilation. Surrounding these caves are rows of concrete single-story buildings known as "field depots," offering high concealment. There are also crisscrossing winding roads (commonly called “maze roads”). The perimeter of the fortress is enclosed by an electric fence, with an additional layer of barbed wire both inside and outside. Guard towers and searchlights are stationed all around, while the surrounding mountains remain in their original overgrown state, with shell craters, artillery shells, shell fragments, and bullets scattered everywhere.

　　  As a historical witness, Boli Fortress silently tells the world that the Japanese invaders intended to turn Boli into a rear base for their aggression and expansion. Any denial or attempt to whitewash their aggression is futile. As a vivid teaching material for patriotic education, Boli Fortress allows visitors to recall that humiliating period of history and stirs up our sense of patriotism.

　　  Address: Dense forests about three kilometers northwest of Boli County, Qitaihe City