The 4th Tunnel
제4땅굴
History · Ihyeon-ri, Yanggu-gun, Gangwon-do
Nearby stations and stops
- No bus stop data for this area
Source: Ministry of Land, Infrastructure and Transport nationwide bus stop locations
- Admission
- Not provided
- Hours
- March-October 09:00-18:00
- November~February 09:00-17:00
- Closed
- Closed on Mondays
- Mondays, New Year’s Day, the morning of Seollal (Lunar New Year’s Day) & Chuseok (Korean Thanksgiving Day)
- Parking
- Parking available
- Available
- Pets
- Not provided
- Accessibility
- Not provided
- Data status
- Source: Korea Tourism Organization TourAPI · Source updated: 2022-10-14 · Collected: Not provided
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.

In the area
Security Heritage Sites 1 of 4 attractions in Yanggu-gun
Similar places in other regions
- The 3rd Tunnel · Gyeonggi-do
- Sangseung Observation Post (First Tunnel) (상승전망대(제1땅굴)) · Gyeonggi-do
- Suyanggae Light Tunnel · Chungcheongbuk-do
- Undersea Tunnel - Tongyeong · Gyeongsangnam-do
- Huin-yeoul Coastal Tunnel · Busan
Source: Korea Tourism Organization TourAPI