Ijen plateau or Ijen Crater also have a blue flame/blue fire phenomenon that there are only 2 in the world. one in Iceland. to see the blue flame at ijen crater, to visite ijen cratere tourists should come in the morning precisely at dawn or travelers can depart from the hotel to the starting point at approximately 1 am. Travelers will climb 3 km is not it and they will come down to the crater, the road to the bottom of the crater are very steep and hard about about 800 meters. Only then, the blue flame pins. This amazing natural phenomenon. Blue flame at Ijen volcano is unique, rare, and becoming an attraction itself. It also adds to the beauty of Ijen Crater the after sunrise.
ijen crater complex is a group of stratovolcanoes, in East Java, Indonesia. It is inside a largerIMG_1645 caldera, which is about 20 kilometers wide. The Gunung Merapi stratovolcano is the highest point of that complex. West of Gunung Merapi is the Ijen crater, which has a one-kilometer-wide turquoise-colored acid crater lake. The lake is the site of a labor-intensive sulfur mining operation, in which sulfur-laden baskets are carried by hand from the crater floor. The work is low-paid and very onerous. Workers earn around $5.50-$8.30 (Rp 50,000 – Rp 75,000) per day and once out of the crater, still need to carry their loads of sulfur chunks about three kilometers to the nearby Paltuding valley to get paid.Many other post-caldera cones and craters are located within the caldera or along its rim. The largest concentration of post-caldera cones forms an east/west-trending zone across the southern side of the caldera. The active crater at Ijen Crater has an equivalent radius of 361 metres (1,184 ft), a surface of 0.41 square kilometres (0.16 sq mi). It is 200 metres (660 ft) deep and has a volume of 36 cubic hectometres (29,000 acre•ft).