Spectacular Neon Blue Lava Pours From Indonesia’s Kawah Ijen Volcano At Night (PHOTOS)

That’s the surreal hue of Indonesia’s Kawah Ijen Volcano, which glows with an otherworldly “blue lava” at night. The mountain contains large amounts of pure sulfur, which emits an icy violet color as it burns, turning the rocky slopes into a hot (at least 239 degrees Fahrenheit), highly toxic environment.

geologyin Spectacular Neon Blue Lava Pours From Indonesia’s Kawah Ijen Volcano At Night (PHOTOS)