The Qionglin combat tunnel, 1,355 meters in length, is the largest civil defense tunnel in Kinmen. The complex tunnel system is located beneath Qionglin Village, with 12 entrances connecting to important buildings in the village and also linking to machine gun emplacements outside the village. The entrance is directly beneath the Qionglin Village Office. The Qionglin combat tunnel was a village defense facility during the cross-strait confrontation period, completed in 1976. The tunnel is equipped with a command post, machine gun firing positions, and a well, all prepared for prolonged combat. The dim lighting inside the tunnel creates a slightly blurred vision, and the narrow, maze-like corridors lead to various places. When visiting Qionglin, it is recommended to walk through the Qionglin combat tunnel to experience the tense, solemn atmosphere of the wartime period and the hard work involved in constructing the tunnel.