Fourth Infiltration Tunnel
Located along one of the most strategic routes in the eastern sector, this tunnel was discovered in March 1990 only 26km (16 miles) northeast of Yang-gu. It is 145m (476 ft.) below ground and measures about 2m (6 1/2 ft.) tall and 2m (6 1/2 ft.) wide. Almost identical to tunnels two and three in size and structure, the fourth tunnel burrows 1km (2/3 mile) south of the demarcation line. It was designed to help North Korea infiltrate the Sohwa-Wontong corridor, the main access route to the Yeongdong (Seoul-Gangneung) Expressway. It is also located in Gangwon-do; you can't visit on your own, but it is sometimes included in tours of the DMZ and Panmunjeom.
Located along one of the most strategic routes in the eastern sector, this tunnel was discovered in March 1990 only 26km (16 miles) northeast of Yang-gu. It is 145m (476 ft.) below ground and measures about 2m (6 1/2 ft.) tall and 2m (6 1/2 ft.) wide. Almost identical to tunnels two and three in size and structure, the fourth tunnel burrows 1km (2/3 mile) south of the demarcation line. It was designed to help North Korea infiltrate the Sohwa-Wontong corridor, the main access route to the Yeongdong (Seoul-Gangneung) Expressway. It is also located in Gangwon-do; you can't visit on your own, but it is sometimes included in tours of the DMZ and Panmunjeom.
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