The Ijen UNESCO Global Geopark is a protected area in East Java, Indonesia, spanning the Banyuwangi and Bondowoso regencies. It is internationally renowned for its 21 geological sites, most notably the Ijen Crater, which features the world’s largest highly acidic turquoise lake and a surreal “blue fire” phenomenon.
Geological Wonders
- The Blue Fire: Caused by the combustion of sulfuric gases escaping from the volcano’s fissures, this phenomenon burns with neon-blue flames. Ijen is home to the largest blue fire occurrence in the world.
- Acidic Crater Lake: The crater holds a breathtaking, turquoise-colored lake that is recognized as the most acidic in the world, filled with highly concentrated hydrochloric and sulfuric acid.
Biodiversity and Landscape
Beyond the volcano, the geopark spans an immense area covering 22 post-caldera volcanic cones, limestone basements, ancient geo-forests, and a diverse coastal landscape. The park is also an important ecological haven, protecting rare flora and fauna, such as the Javan Banteng in the Savana Sadengan feeding grounds.
Sustainable Tourism
Recognized for its global significance, the geopark actively promotes sustainable tourism, conservation, and education. It hosts the Ijen Geopark Geological Information Centre (PIGGI), which offers educational programs and acts as a central hub for visitors.
