Reply #14: Seoul, South Korea, would be leveled in less than an hour if the war "turned hot."

[Selatius]

In the mountainous regions north of the South Korean capital, North Korea has installed literally thousands of heavy artillery guns and rocket launcher batteries. The mountains of North Korea are honeycombed with caves, some natural and some dug by man. There are so many underground complexes in North Korea that we're not even sure how many there are, except to say there are probably many. Following the hard lessons of Korean War, the North sought ways to mitigate the damage done by enemy bombers and aircraft over the North's territory. The result was they moved many operations underground in caves, bunkers, and mountains.

If a war comes, all of a sudden the entire area will see a bunch of artillery guns being wheeled out into the open from the caves and underground complexes, and the firing will last for as long as it takes for some aircraft to knock them out. It may take a long time before all those artillery guns are silenced.