On Friday, July 7, firefighters in Worland, Wyoming, responded to a report of a fire at the site of a former sulfur plant. This is hellish sight that greeted them:
The fire, which was put under control within 20 minutes, was ignited by the exhaust of an off-road motorcycle, according to the Associated Press, though Fire Chief Chris Kocher said that nobody was hurt and no one was cited for starting the blaze.
All of this means we can all enjoy the beauty of this practical special effect relatively guilt-free. Here is a GIF: