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Recordist's notes
A fourth infiltration tunnel was discovered on 3 March 1990, north of Haean town in the former Punchbowl battlefield. The tunnel's dimensions are 2 by 2 m (7 by 7 feet), and it is 145 metres (476 ft) deep. 1. Water dripping within the tunnel 2. Narrow gauge railway cart inside the tunnel 3. Propaganda broadcast heard braodcasting from North Korea into the Punchbowl Valley
About the place
Yanggu is a town of about 24,027 people in Gangwon-do, South Korea.
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Sources & credits
- “North Korean Infiltration Tunnel #4” by abyssence@gma... – Public Domain Mark · radio aporee ::: maps via Internet Archive
- Reverse geocoding: GeoNames – CC BY 4.0