While this article may be a few years old. It offers some interesting insight into the DMZ of North and South Korea. There are also some great pictures of the South Koreans because presumably National Geographic was not allowed into North Korea. The pictures really show the extremity of the situation and the seriousness that is required of the soldiers on duty. The task is described as being "like a schoolyard with two bullies poking each other in the eye." Mind games are key and psyching out the enemy is essential according to the article.
With the schoolyard analogy, it kind of simplifies the situation. How long is this going to last? what is the point? are the North and South really just acting like children that can't be mature enough to put aside their differences?