This study conducted a survey and evaluation on ‘The 2021 Jeju World Natural Heritage Festival’ with a framework of various stakeholders related to festivals. While aiming for the essential context of the celebration, we tried to find suggestions to ensure the continuity of the celebration and the designation of the World Natural Heritage. As a methodology, surveys and interview surveys were conducted in parallel with the framework of multifaceted evaluation. To summarize the important contents presented as policy suggestions, first, it is necessary to expand the concept of ' encounter with hidden nature' from the positivity of the concept of 'encounter with hidden nature' to have fellowship with mankind about natural heritage. For reference to this, efforts should be made to secure the continuity of the designation of World Natural Heritage through a contextual approach using the frame of 'encounter'. Second, since the participation of experts can help in many ways, it is necessary to encourage many experts to participate as a staff or activist. Third, it is necessary to sublimate Jeju's natural heritage into a public celebration without damaging it. Finally, it should be a festival centered on local communities and local residents. It is necessary to actively seek a system in which the World Natural Heritage Village Preservation Association, which will be created (tentative name), will be centered and promoted by the villagers.

Northern Okinawa has been recently inscribed by UNESCO as World Natural Heritage under the auspices of the IUCN. However, the U.S. Navy base called Jungle Warfare Training Center is located adjacent to the designated area with its deployment of ospreys ousting endangered species. Military wastes are still there. It shows the political powerlessness of the Okinawans, the Indigenous people still oppressed by the majority in Japan as well as the governance problem due to the U.S. -Japan treaties. I think the international pressure after the inscription is essential. Facing many serious environmental problems in East Asia, the Indigenous perspective should be focused.

This study was conducted to provide scientific information for establishing efficient and systematic measures for nature conservation and management in Manjang-gul lava tube. The number of vascular plants was 204 taxa (82 families, 176 genera, 144 species, 1 subspecies, 26 varieties and 1 forma). Of those, pteridophyte were 5 families, 12 genera, 14 species and 1 variety and gymnosperm were 4 families, 6 genera, 5 species and 1 variety. Seventy three families, 149 genera, 157 species, 1 subspecies, 24 varieties and 1 forma in angiosperm composed of 62 families, 123 genera, 137 species, 1 subspecies, 17 varieties and 1 forma in dicotyledon and 11 families, 26 genera, 20 species and 7 varieties in monocotyledon. The number of naturalized plants was 9 families, 17 genera, 18 species and 3 varieties, totaling 21 taxa.