At the summit of Kawah Ijen lies a surreal turquoise crater lake, which holds the title of the largest acidic lake on Earth. Its extreme acidity is due to high levels of sulfuric and hydrochloric ...

A viral video showing a travel content creator's expedition to the volcanic Ijen crater in Indonesia has grabbed many eyeballs online. Discover more about it below.

When you’re in the mine, the sky is covered by gases. Day and night are confused. You feel suspended in time. Sunarto, 41 years old, carries a load of sulfur out of the Kawah Ijen crater.