Just below the summit of Baegundae, a line forms on bare granite. Hikers wait their turn to pose beside the Taegeukgi, the Korean national flag, planted at the top of Seoul’s highest peak, 836 meters above sea level, as the city spreads out below them. Many in the line are not Korean. “For the past three years or so, it feels like more and more foreigners have been coming. Even today, more than half of the hikers are foreigners,” said Park Sun-gyu, director of public relations at the Korea Natio