Dahan Stronghold — Dahan Stronghold is located in the mountainous area on the west side of Nangan Island, and is a highly representative underground tunnel and coastal defense stronghold in Matsu's military history.

Dahan Stronghold. Dahan Stronghold is located in the mountainous area on the west side of Nangan Island, and is a highly representative underground tunnel and coastal defense stronghold in Matsu's military history. Dahan Stronghold is located in the mountainous area on the west side of Nangan Island, and is a highly representative underground tunnel and coastal defense stronghold in Matsu's military history. The entire structure is carved from solid rock, with internal facilities including firing ports, command areas, dormitories, ammunition storage, and observation posts, possessing complete military defense functions. The stronghold faces the open sea and has shouldered defense missions for many years, still retaining a strong military atmosphere today. Walking through it is like entering an underground fortress hidden within the mountain, making it an important site for understanding Matsu's military culture and combat spirit. Address: 連江縣南竿鄉Dahan Stronghold, Nangan Township, Lienchiang County (Located within the Beihai Recreation Area; directional signs and the entrance are situated next to the Nangan Visitor Center.) Hours: 00:00–23:59 Matsu