Kali Pahit River is also the disposal place of the water from Kawah Ijen, which contains of much sulfur. Ijen Crater or Kawah Ijen is another volcanic tourism attraction in Indonesia. Ijen Crater (Kawah Ijen) is a famous tourism object, which has been known by the domestic and foreign tourists because of the beautiful and charming nature. It is 5,466 hectares, 2,386 meters high from the depth of the sea, with a 92 hectares tourism forest. Its temperature is between 2 to 8 degree centigrade and the crater area lies at 2.386 meters above sea level (mdpl).