This is from a while ago, but still so amazing. The crater in Indonesia known as Kawah Ijen emits rivers of light from burning sulfur. It isn’t actually lava, as many sites report, however. The glow comes from the combustion of sulfuric gases. This phenomena has been around for a long time.
Blue volcanic fire was described in antiquity in Italy on the south slope of Mount Vesuvius and on the island of Vulcano, Grunewald said. – NatGeo
There are plenty of natural treasures hidden away in the most unsuspecting places on Earth. One of them is an Indonesian sulfur mine, Kawah Ijen, that produces stunning, spectral blue lava. The images of this mine are so breathtaking, I could just stare at them for hours.
Kawah Ijen is a part of the Ijen volcano complex — a group of stratovolcanoes in East Java, Indonesia — with an active crater that’s 200 meters deep. The complex is also home to the world’s largest turquoise-colored acidic lake, full of sulfuric acid. The lake is a sulfur mining site; miners carry sulfur-laden baskets by hand from the crater floor.
The miners work at night to double their meagre income, but they don’t have to worry about the dark. Kawah Ijen, an ordinary rocky crater by day, transforms into a stunning display of electric blue light at night.
via Mind-Blowing Video of Blue Lava Pouring Out of Indonesian Volcano
Just when you think you’ve seen it all … you haven’t.