You will see and feel the real military tension between South and North Korea. Cheorwon is the small city facing North Korea, therefore, you will have a chance to walk inside of infiltrated tunnel. There, you might see North Korean soldiers through binoculars at Peace Observatory. Because it's location is not easily accessible, Cheorwon is less famous than other DMZ places. But, if you join this tour, you will be brought in the middle of a battlefield where tens of thousands of soldiers died during the Korean War.
During the Korean War, Cheorwon changed hands several times between the UN invasion of North Korea and the Chinese invasion of South Korea. By 1951, the front line had stabilized, cutting across Cheorwon County, and the area became part of the Iron Triangle battlefield.
Following the signing of the Korean Armistice Agreement, the Korean Demilitarized Zone cut Cheorwon County into two, creating Cheorwon County in South Korea and Chorwon County in North Korea.
A number of Korean War sites in Cheorwon County are now tourist destinations including the Second Incursion Tunnel, Cheorwon Peace Observatory, the former Woljeong-ri Station and the former Korean Workers' Party Office.
The Second Incursion Tunnel is discovered at 800m (0.5 mile) south of Military Demarcation Line under Korean Armistice Agreement in March 1975. This incomplete tunnel is 3.5 km (2.2 mile) long, of 2 m (6 ft 5 in) maximum high and 2.1 m (6 ft 11 in) wide. It runs through bedrock at a depth of 50 (164 ft) - 160m (525 ft) below ground. It was apparently designed for a surprise attack on Seoul from North Korea, and could accommodate 30,000 men per hour along with light weaponry. Initially, North Korea denied building the tunnel. North Korea then declared it part of a coal mine, the tunnel having been blackened by construction explosions. Signs in the tunnel claim that there is no geological likelihood of coal being in the area. The walls of the tunnel where tourists are taken are observably granite, a stone of igneous origin, whereas coal would be found in stone of sedimentary origin. A total of four tunnels have been discovered so far, but it is believed that there might be up to twenty more.
The Peace Observatory looks across the Demilitarized Zone. It is the part of South Korea closest to the North. Visitors can catch a rare glimpse of the reclusive North Korean state through binoculars.
Woljeong-ri Station was a small train yard where rail stock was stored or shunted before leaving for Wonsan, now in North Korea. At the site are remains of a train used by the North Korean army which was bombed by UN forces. "The windows of the train car are twisted toward the sky and the frame and the body of the train are crooked and rusty."
The former Korean Workers' Party Office was located in the territory of North Korea by the signing of the Korean Armistice Agreement. Therefore, this building was bombed mostly during the Korean War and it is almost destroyed.