Indonesia has one mountain out of 2 in the world which shows blue fire activity in its crater at dawn. Blue fire activity in this world can only be seen in 2 places in the world, namely in the crater of Mount Ijen in Indonesia and another in Iceland. Its appearance is sometimes big, small, or even invisible. The local weather greatly influenced its appearance.
Ijen Crater is located on Mount Ijen which is located on the border of Bondowoso Regency and Banyuwangi Regency, East Java Province. Mount Ijen has a height of 2,443 meters and a slope of 40 degrees. Ijen Crater is an acidic crater lake that sits at the top of Mount Ijen with a lake depth of 200 meters. Ijen Crater is in the area of Ijen Tourism Park, Bondowoso Regency and Banyuwangi Regency, East Java. Every morning around 02.00 to 04.00, around the crater you can find the phenomenon of blue fire or blue fire, which is unique in this place.
Blue Fire itself is the reaction of natural gas when it meets oxygen at a certain level. The result of this reaction looks like a blue flame. Because of its beauty, Mount Ijen is one of the destinations that tourists regularly visit, both domestic and foreign.
The Blue Fire phenomenon in Ijen Crater may have existed for hundreds or even thousands of years ago. However, its existence was only known by the public around the 1950s. It is most likely that the discoverers were local residents who were mining sulfur because Ijen Crater was a traditional sulfur mining area.
The blue flames can only be seen in the early morning at Ijen Crater, before sunrise. The peak of the moment of beauty of Ijen Crater lies when the sun is in the other hemisphere. This bright color comes from the high temperature in the crater.
After enjoying the sight of the blazing 'blue fire' in the crater of Mount Ijen, don't forget to take the time to see the sunrise. But be careful, Ijen Crater is also one of the largest acidic craters in the world. This crater has a very high acidity level, which is close to zero so that it can dissolve the human body quickly.