823K views · 1.5K reactions | The volcano with blue ‘lava’ and a lake of pure acid… With a lake of pure acid and strange blue flames that emanate from beneath the volcano, Kawah Ijen is surely one of the most dangerous places to work in the world. Yet people risk their lives to work at the crater…geologist Dr Glyn Williams-Jones and filmmaker Régis Etienne explain why. #Volcanic | BBC Earth | Facebook

The Phenomenon of Blue Lava Despite its name, blue lava isn't actually molten rock glowing blue. It's a breathtaking visual effect found at the Kawah Ijen volcano in Indonesia. This stunning blue color is caused by the combustion of high-pressure sulfuric gases. As these gases escape from volcanic vents and come into contact with oxygen-rich air, they ignite and burn with a vibrant, electric blue flame. This spectacular "blue fire" can be seen flowing down the volcano's slopes, creating the illu