Jeju Volcanic Island and Lava Tubes
Jeju Volcanic Island is a popular tourist destination in South Korea, with 14.4 million visitors in 2019 alone.  Environmentalists say they make 20,000 tons of garbage each year.  Environmentalists and scientists have said that the government has cut down too much of Jeju's forests to make roads, buildings, resorts and golf courses for visitors.  In 2020, environmentalists protested plans to build a second airport on the island.  Among other problems, this airport would need a road through Bijarim Forest.  This is a forest of nutmeg trees, some of them 800 years old.  It is the only place in the world where nutmeg trees grow so closely together.