It's nice to know when a person defects that there will be a gift shop there for all their gift giving needs. These signs are posted outside of the Third Tunnel, illustriously named because of the order in which it was found. South Korea has found four tunnels dug by North Korea in an attempt to infiltrate the south. The most recent was found in 1995. The third tunnel is the most complex and the closest to Seoul . When it was found the North claimed that a) it was actually built by South Korea and b) the tunnel was a defunct coal mine. The only problem is there isn't any coal in this area so the North Korean soldiers painted the tunnel black and said, "Look, coal!" Those wacky North Koreans.