In 1997 Chinese firefighters succeeded in putting out a 400 year old fire. The fire in the Baiyanghe coalfield started in 1560.
The fire consumed over 127 million tons of coal before it was extinguished.
Four hundred years is a long time, but it is nothing in view of eternity. The fires of Hell will never end or be put out.
Source: Reuters News Agency (ministry127.com)
Rev 20:15 (ESV): “And if anyone's name was not found written in the book of life, he was thrown into the lake of fire.”
The national anthem of hell is, "I Did It My Way." - Peter Kreeft.