The Ijen volcano complex is a group of stratovolcanoes, in East Java, Indonesia. It is inside a larger caldera  Ijen, which is about 20 kilometers wide. The Gunung Merapi  stratovolcano is the highest point of that complex. (not to be confused  with Mount Merapi, Central Java, Gunung Merapi)
West of Gunung Merapi is the Ijen volcano, 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. 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 E-W-trending zone across the southern  side of the caldera. The active crater at Kawah Ijen has an equivalent  radius of 361 meters, a surface of 41 × 106 square meters. It is 200  meters deep and has a volume of 36 × 106 cubic meters.
In 2008, explorer George Kourounis took a small rubber boat out onto the acid lake to measure its acidity. The pH of the sulfuric acidin the crater was measured to be 0.5
For more information please clik here Ijen Plateau
For more information please clik here Ijen Plateau
 

 We are Mount Bromo Tours Travel is one of Travel Agent in Indonesia, located in Probolinggo East Java Province. We are legal company, professional and experienced more than 7 years, with strong knowledge of Indonesia travel specializing in Java Island tourism. Through this site, we try to share about our tourism objects knowledge, packages, and accomodation that provided in our company with our visitors. Hoping it usefull for your planning to visit Indonesia.
						We are Mount Bromo Tours Travel is one of Travel Agent in Indonesia, located in Probolinggo East Java Province. We are legal company, professional and experienced more than 7 years, with strong knowledge of Indonesia travel specializing in Java Island tourism. Through this site, we try to share about our tourism objects knowledge, packages, and accomodation that provided in our company with our visitors. Hoping it usefull for your planning to visit Indonesia.
						


