Ant Hill Fort

　　   Ant Hill Fort is situated on Ant Hill by the north bank at the entrance of the Lingyang Gorge in the southeastern suburbs of Duanzhou District. Built in 1920, it was one of the seven forts constructed in Zhaoqing by Lin Hu, the military governor of Zhao–Luo–Yang. This fort commands a strategic point controlling both the overland route through the Han Gorge and the waterway of the Lingyang Gorge, featuring perilous terrain that has long been a contested military stronghold.

　　   The main structure of the fort is situated at the highest point of Honggang. Centered around the main concealed bunker (the main fort), four smaller concealed bunkers (sub-forts) are arranged in a rectangular formation, positioned to the southeast, northeast, southwest, and northwest. The bunker structure is consistent with other local forts. In addition to connecting trenches linking the main and sub-forts, a particularly long trench extends eastward starting from the northeastern bunker, passing through Anlango Mountain, Xiucaikeng, and Snake Head Mountain before reaching the location of the former Wenbi Building (now demolished), then turning south toward the former Ant Hill Temple (also demolished), and finally extending all the way to the entrance of the Lingyang Gorge. The total length is 3,000 meters. Both land and water routes fall within its line of sight. The scale of the engineering project is immense, integrating offensive and defensive functions, and is truly awe-inspiring.