Did you know...

http://losmitosdedaniellefer.blogspot.co.at

...that in Pennsylvania exists a city called Centralia that is literally built on coals? Centralia is also called ghost town as beneath her surface a mine fire has constantly been burning since the year 1962. Many residents had to give up their live in this place during the 60s, as living there is too dangerous. As a result its population declined from over 1000 people to 12 people (in 2005). Despite the fact that the town is considered of being uninhabitable, due to the poisonous gases that rise from beneath the ground, some inhabitants refuse to leave their homes. 

Many people think that the fire started when the waste disposal site was set on fire, but it‘s also possible that it inflamed itself, because when coal and oxygen meet heat is created which is going to light if it can‘t be diverted. Since the time the fire has started many attempts to extinguish it have been made. It is said to have cost more than 70.000.000 $ so far - without success.  The fire is still burning and there is no end in sight. Scientists expect the fire to burn another 100 to 200 years.