Kawah Ijen: blue fire from burning sulfur
Tanarian
For no particular reason:
Tanarian
Indonesia's Kawah Ijen volcano spews out blue lava thanks to its incredibly high levels of sulfur. ... The phenomenon is caused when the volcano's sulfuric gases come into contact with air temperature above 360°C.
Tanarian
Stunning Electric-Blue Flames Erupt From Volcanoes
Stereo Nacht