| Obverse description |
`Kawah Ijen` is a famous volcanic crater located in East Java, Indonesia. It is known for its stunning blue fire phenomenon, which occurs due to the combustion of sulfuric gases at high temperatures. The crater also contains one of the world’s largest acidic sulfur lakes, with striking turquoise-colored water. Kawah Ijen is a major site for sulfur mining, where workers extract solidified sulfur from the crater. The breathtaking landscape, combined with the unique natural phenomena, makes it a popular destination for hikers and nature enthusiasts. |
