Twice as wide as the first one, the second tunnel was discovered in March 1975 in the Central Sector of the DMZ about 13 kilometers north of Ch'orwon. Measuring two meters high and 2.1-2.2 meters wide, the arch-shaped tunnel¤Ñlarge enough to move such heavy weapons as tanks, field artillery and armored personnel carriers¤Ñis capable of letting pass 30,000 troops moving three to four abreast, or a division strength, per hour. Bored through 3.5 kilometers of bedrock at a depth of 50-160 meters from ground surface, Tunnel ¥± intrudes 1.1 kilometers south of the Military Demarcation Line at a point 101 kilometers from Seoul. A spacious troop assembly area was carved out in the tunnel, which has three exits.  
 
 
 

 

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