Acting President Han Duck-soo (3rd from R), who concurrently serves as prime minister, salutes the national flag during a ceremony at the Peace Park in the city of Jeju on South Korea's largest island ...

Jeju Volcanic Island and Lava Tubes together comprise three sites that make up 18,846 ha. It includes Geomunoreum, regarded as the finest lava tube system of caves anywhere, with its multicoloured ...