The name of this mountain switches with the seasons, but it is commonly called Kumgangsan. Known as the diamond of Korea and also its second tallest mountain, with the tallest peak being 1638 meters high. This mountain is divided into 3 areas: Inner Kumgang, known for its temples; Outer, known for its waterfalls and hot springs; and Sea, known for its lagoons and rock pillars emerging from them. This mountain historically has been popular with artistic types that need a place to contemplate; and many did so in the suspended Poduk Hermitage, which is kept from falling by one copper pole. Find refuge yourself at a zen monastery named Pyohon, located in inner Kumgang, dating back to 670, one of the oldest of its kind. An unusual amount of jagged rocks litter the landscape here, even the peaks are jagged, so watch your step. This is a tourism area that both South and North Korea helped to develop.