Ijen
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The Ijen volcano complex is a group of composite volcanoes located on the border between Banyuwangi Regency and Bondowoso Regency of East Java, Indonesia. It is known for its blue fire, acidic crater
Ijen volcano
Traditional sulfur mining at Ijen. This image shows the dangerous and rugged conditions the miners face, including toxic smoke and high drops, as well as their lack of protective equipment. The pipes over which they are standing serve to guide sulfur vapors and condense them, thereby facilitating production.
Blue flames caused by the burning of sulfur in the Ijen caldera
The sulfuric lake of Kawah Ijen Mountain's cauldron, Indonesia
Blue lava
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Blue lava, also known as, and simply referred to as blue fire or sulfur fire, is a phenomenon that occurs when sulfur burns. It is an electric-blue flame that has the illusory appearance of lava. Desp
Ijen
…edges was measured to be 0.5 and in the middle of the lake 0.13 due to a high concentration of sulfuric acid. Since National Geographic mentioned the electric-blue flame of Ijen, tourist numbers have increased. The phenomenon has long been known, but midnight hiking tours are a more recent offering. A two-hour hike is…
"Blue lava" as seen at night on Kawah Ijen, in Indonesia