First, we will watch about 8 minutes of video clips related to the DMZ in a theater. After watching the video clip, we will have some time to look around the exhibition hall. We will go to the 3rd Tunnel which was dug by North Korea. In 1970, North Korea dug about 20 tunnels near the border to invade South Korea again. Among 20 tunnels, we have found 4 tunnels so far. Among them, four tunnels have been discovered so far. The 3rd tunnel was discovered in 1978. Among the 4 tunnels, the 3rd tunnel is the largest and the most threatening because it is the closest to Seoul. The distance from here to Seoul is only 52 km and about 30,000 armed North Korean soldiers can pass through this tunnel in about an hour. The total length of this infiltration tunnel is 1,635 meters. And the height and width of the tunnel are about 2m, but they are not constant. From the military demarcation line, it runs 1,200 meters into the north and 435 meters into the south.

The Dora Observatory building has three floors. On the first floor, photos and contents of the meeting between former presidents Moon Jae-in and Kim Jong-un at JSA for the inter-Korean summit in 2018 are displayed. On the second floor, you can see the view of North Korea from the inside through the whole glass. On the 3rd floor, you can see the view of North Korea from the outside through the telescope. You can see the view of North Korea.

Tongilchon(unification) village is the residential area located inside the civilian off-limited area. Around 500 South Korean farmers cultivate one of the best quality Ginseng called gaesung ginseng, soybeans, vegetables. We may stop for 15~20minutes. We move to the next location, Gamak Mountain Suspension Bridge. It takes about 30 minutes.

It is one of longest suspension bridge of Korea with 150 meter length and used to be fierce battle field during Korean War. After short hiking to the top, you will reach to the great view point at the mountain Gamaksan. After this, we return to Seoul. It takes about 70 minutes.