Indonesias Kawah Ijen Volcano, on the island of East .

Indonesias Kawah Ijen Volcano, on the island of East . The Ijen Crater is the worlds largest acidity with the acidity level which is close to zero that even can melt the human body. The cause of its acidity is an inflow of hydrothermal waters charged with gases from a hot magma chamber below. Do you know that The colour of the water is a result of its extreme acidity and a high concentration of dissolved metals?