17 oct 1978 año - Third tunnel into South Korea discovered "Tunnel of Aggression"

Descripción:

The third tunnel was discovered on 17 October 1978. Unlike the previous two, the third tunnel was discovered following a tip from a North Korean defector. This tunnel is about 5,200 ft long and about 240 ft below ground. Foreign visitors touring the South Korean DMZ may view inside this tunnel using a sloped access shaft.

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