Updated on: August 26, 2017
Located at the matsu archipelago, southern coast of Nangan Fort is another military base similar to that of Andong Tunnel termed the Iron Fort 鐵堡 that was formed from a huge coral rock awkwardly jutting out towards the sea. It is precisely this unique location which makes it strategically suitable for conversion into a the frogmen military base by hollowing out, cementing and adorning the huge coral rock exterior with camouflage colors and nettings to avoid unnecessary attention from outsiders. There are several important features built in to facilitate survival and defense such as cannon holes, murder holes, living bunks, kitchen, toilets, cannon batteries etc.
To prevent sneak attacks from Communist frogmen, certain measures were taken as a deterrence such as laying glass fragments on the surface of the fort.
It is truly an amazing experience to witness the quarters of frogmen who protect Taiwan with their lives. Currently Iron fort serves as a tourist attraction.