On the slopes of an Indonesian volcano, rivers of light appear to pour out of the dark, glowing an electric blue that looks ...
Kawah Ijen in Indonesia is home to the world’s largest acidic lake, glowing turquoise and famous for its rare blue flames, where corrosive waters, fire, and geology collide.
In this photo released by the Geological Agency (Badan Geologi) of Indonesia’s Ministry of Energy and Mineral Resources, ...