The 4th Tunnel
제4땅굴 · Gangwon · Palaces & heritage
The 4th Tunnel was discovered on March 3, 1990. It is located 1,200 meters from the Military Demarcation Line in the demilitarized zone of South Korea. This is the only tunnel to be discovered that provides full access to tour groups. Educational instruction is given in the square outside the tunnel.
| Type | Palaces & heritage |
|---|---|
| Region | Gangwon |
| Address | Ihyeon-ri, Yanggu-gun, Gangwon-do |
| Hours | March-October 09:00-18:00 · November~February 09:00-17:00 |
| Closed | Mondays, New Year’s Day, the morning of Seollal (Lunar New Year’s Day) & Chuseok (Korean Thanksgiving Day) |
| Parking | Available |
Getting there
What's on nearby
Events run on fixed dates — check these against your own trip. Trip Planner shows everything on for the days you are in Korea.
- Nov 6, 2026 – Nov 8, 2026Yanggu Punchbowl Siraegi & Apple Festival
