Ijen Crater
The beauty of the Ijen Crater with its world-famous natural phenomenon is undeniable. Blue Fire is one of the main attractions of the Ijen Crater, when the blanket of night falls, a blue flame glows from the bottom of the Ijen crater. The natural phenomenon caused by the sublimation of sulfur gas to a temperature of more than 200 degrees produces Blue Fire, which only exists in two places in the world. When the morning sun begins to sweep away the darkness of the night, a very exotic natural view appears. The crater with the largest acid in the world, natural lines formed around the crater cliffs, the activities of sulfur miners and climbers combine into an exotic view.