Ijen is an acidic crater lake at the top of Mount Ijen, East Java, has a height of 2368 meters above sea level with a depth of 200 meters and the area of the lake crater reached 5466 hectares. Crater in the territory of Nature Reserve Nature Trail Ijen Bondowoso, East Java. 
Ijen crater Ijen mountain views from the summit was amazing. The atmosphere is pleasant to feel good in the landscape and natural ambience make nature lovers became interested in exploring this Ijen mountain. Besides being a recreation of the most beautiful places in the region Bondowoso, Ijen mountain areas as frequently as the young children as a suitable camping spot. Ijen is a large lake with a bluish-green mist and sulfur fumes very charming. In addition, cold air with a temperature of 10 degrees centigrade, the temperature could even reach two degrees Celsius, will add to the sensation of cold at all for those who are not accustomed to feel the air in the crater of Ijen. Various plants that exist only in the highlands you can also find, like Flowers Edelweis and Pines Mountain.
As the morning, when the sun began to shine crater area, the beautiful scenery you can enjoy the feeling of light appeared from behind trees and hiding when the sunset. Ijen a bluish green color will be increased in the golden sunlight reflecting in the crater. Stunning scenery you can also get with the charm of beauty to see the nearby Mount Merapi. Mount Merapi has similarities with the shape of Mount Ijen. The most appropriate time to witness the beauty of Ijen is in the morning.
To reach Ijen, you have to down a path along the caldera cliffs. Do not forget to bring life cover because sometimes the sulfur smoke is blown through the track. You can also surround the caldera in the region which takes eight to 10 hours to reach on foot.
