This Volcano Glows Electric Blue at Night

Added: 2026-05-05

[00:00:00]Did you know there's a volcano that glows blue? This is Aen volcano in Indonesia. What you are seeing is not lava. It is sulfuric gases escaping from underground vents at extremely high temperatures. When these gases meet oxygen and ignite, they produce an electric blue flame that can only be seen clearly at night. The crater is also one of the most toxic places on Earth due to high sulfur dioxide levels.

[00:00:20]Despite that, miners still enter the crater every day, carrying heavy loads of solid sulfur extracted directly from the burning vents. So, if this isn't lava and it isn't fire in the usual sense, what exactly is lighting up the darkness?