Antong Tunnel Introduction
The Andong Tunnel is located on the northern side of Dongyin Island and was once an important military underground facility constructed to meet wartime needs. The tunnel winds along the mountain, with interiors formed by sturdy rock walls and artificial traces, reflecting the unique engineering techniques and historical marks of the wartime period. Today, the Andong Tunnel has been opened as a tourist route, allowing visitors to enter the underground and experience the military culture, the scale of the underground space, and the island’s significant role in national defense strategy up close.
