Here is an interesting story about a mailbox that the Neutral Nations Supervisory Commission (NNSC) maintains to communicate with the North Koreans:
Every Tuesday morning an international armistice monitoring group on the southern side of the Demilitarized Zone (DMZ) holds a meeting and places its minutes into a mailbox marked “KPA” (Korean People’s Army) for North Korean officials to read.
Five Swedish and five Swiss members of the Neutral Nations Supervisory Commission (NNSC) monitor troops levels and whether the Armistice Agreement that ended 1950-53 Korean War is being upheld in South Korea.
Their efforts to communicate with North Korea, however, don’t pay off as no one ever picks up the documents from the KPA mailbox.
“In the last 18 years, North Koreans have not checked this mailbox,” Swiss Army Maj. Gen. Urs Gerber told a Yonhap News reporter during a recent visit to the NNSC conference room close to the Joint Security Area. “We are considered as a ghost organization by North Korea.”
Pyongyang has ignored the existence of the NNSC since 1995, but those two delegations continue to offer reports to North Korea, which are ignored as part of efforts to maintain its legacy.
Old papers are removed every three or four months when the small wooden box becomes full, Gerber said, blocking a door leading to the North preventing anybody from opening it out of curiosity. [Yonhap]
You can read much more about what the NNSC does at the link.