Rock and the City. Hiking in Korea is a national craze. Mountains in Seoul and around Seoul are swarmed with hordes of hikers dressed in black hiking gear and equipped to the nines. As you hike under high skies surrounded by trees you're fooled into thinkging that you're far, far away from the madding Seoul crowd; the next moment, you turn around and this is the wiew that offers itself to you: an urban jungle with thousands of high-rise apartment buildings.