Centralia, Pennsylvania is a town where a fire has been burning underground for a very long time. The fire started in a coal mine in 1962 and has been burning ever since. The fire is caused by coal that is still burning underground, and it creates a lot of smoke and heat. The smoke and heat have caused many people to move away from the town, so now there are not many people left in Centralia.
The fire has also caused some problems for the town. The heat from the fire has made some of the roads buckle and crack. The smoke has also caused some health problems for people who live nearby. There are some signs and fences around the town to keep people safe and to remind them of the danger.
Many people have tried to put out the fire, but it has been very hard to do. The fire is burning deep underground, so it is hard to get to it. Also, the fire is very big, so it is hard to put it out completely.
Today, Centralia is mostly abandoned, and it is not safe to go there. It serves as a reminder of the danger of fires and the importance of being careful with fire.