August 11, 2026
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- European Space Agency (ESA) has recently shared pictures of Kawah Ijen Lake.
- It is located in East Java, Indonesia.
- It has pH of less than 0.3
- It is a volcanic crater that is ‘full of acid that also spits blue flames’.
- It is the largest and most acidic crater lake in the world.
- Geologists call it the ‘The largest acid barrel on Earth’, due to its high concentration of sulfuric and hydrochloric acids, as well as dissolved minerals which also give the lake its blue-greenish colour.
- It also emits flammable and hot sulfurous gases that ignite upon contact with Earth’s oxygen-rich atmosphere.
- It is the source of the extremely acidic and metal-polluted river ‘Banyupahit’.
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