Fire is usually created for a purpose and put off when that purpose is served. Some, however, like wildfires may not necessarily be man-made but can also be put out by humans. The conclusion is that all fires are eventually put off whether they were created naturally or artificially. Not all fires, however, follow this same path.

With many fires on this list burning for hundreds and even thousands of years, no one knows when or if the flames will ever go out. Some of these gases have stayed alit by the continuously fueling of natural gases while others are basically burning coal, but one thing is sure, these flames seem to be eternal.

10 Smoking Hills, Canada

Canada has lots of unusual things from strangely long names to haunted destinations. The Smoking Hills, however, is perhaps one of the most terrifying. Located in Canada’s Northwest Territories, these hills positioned beside the Arctic Ocean have been burning for centuries.

An explanation offered by scientists reveals that the fire is caused by spontaneous ignition of the deposits of sulfur-rich lignite.

These hills can be visited by boat, helicopter, or plane and one must be careful when exploring the hellish spot.

9 Fire Temple Of Baku, Azerbaijan

This religious temple in the capital of Azerbaijan was previously used as a Hindu place of worship. It was built on top of a natural gas vent and there were several holes from which the gas emanated and kept the fire burning.

Although the gas may have been exhausted from large-scale extraction in the 1960s, the flames are still kept alive today by the city’s gas supply.

8 Burning Mountain, Australia

It’s hard to believe but the fire burning at Australia’s Mount Wingen is said to have been burning for at least 6,000 years. It is the oldest fire in the world.

Besides its continuous burning for several millennia, this ancient flame located below the earth’s surface in New South Wales moves at a speed of one meter per year.

The fires are caused by the burning of underground coals which were believed to have been ignited by a lightning strike or bushfires approximately 6,000 years ago.

Since it is located beneath the surface, no one knows the size or color of the fire. Only smoke from the fire can be seen emanating from the mountain.

7 The Gates Of Hell, Turkmenistan

Also known as the Darvas Gas Crater, this spot in Turkmenistan has been on fire since the 1970s when it was first created.

It all began when scientists unknowingly uncovered natural gas when drilling for oil.

In an attempt to stop the gas from emitting into the air and causing damage to the environment, it was set on fire to burn off. More than 50 years later, that fire is still burning and showing no signs of fizzling out.

Related: Real-Life Places Believed To Be Actual Gates To The Underworld

6 Brennender Berg, Germany

Brennender Berg is the German translation for “burning mountain” and just like the name suggests, there is a mountain in Germany with fires that have been alive for more than three centuries.

The fire is a coal seam fire and it was ignited in 1668 but no one knows what exactly caused the ignition.

For many years since its ignition, the flame’s magnitude was high and explorers to the area could feel the heat on their feet and the smell of sulfur was strong.

The fire eventually reduced at the end of the 18th century, but it is still alive today, and the evidence is from the steam that rises from the mountain after rainfalls.

5 Eternal Flames Falls, New York

Located in Chestnut Ridge Park beneath a beautiful waterfall lies a natural gas leak that continuously fuels a flame.

Unlike the others on this list, Eternal Flames can be extinguished but are always quickly lit by the next visitor to the fall.

To keep it burning, visitors are advised to always come with a lighter so it can always be kept on. Even though it occasionally goes off, the chances that there will be no fire are slim.

4 Centralia, Pennsylvania

Being a ghost town is eerie enough but being one with a never-ending fire is what makes Centralia more interesting. Since 1962, a fire has been burning in a coal mine below the town.

On several occasions, the state authorities fought the fire to put it out, but they eventually gave up and the fire won the battle.

Today, the majority of the residents who used to live in the town have fled as poisonous smoke continues to emanate from the ground as a result of the fire.

Related: The Fires Continue: What Centralia Looks Like Today

3 Vulcan Mine, Colorado

Coal is one of the leading causes of continuously-burning fires around the world. The Vulcan Mine flame, one of the longest burning flames caused by coal, has been burning for more than a century.

The fire that still burns from the mine today was caused by a large explosion that occurred in the mine in 1896 which resulted in the death of approximately 49 miners.

The mine also saw two more explosions which led to the death of more workers.

Evidence of the underground smoke can be seen from the occasional steam and smoke rising from the ground and also the quick melting of snow in the places where the fires are most concentrated.

2 Eternal Fire of Baba Gurgur, Iraq

Baba Gurgur is home to flames that are said to have been burning for more than 4,000 years.

It was these flames that even motivated a team to start digging for oil in the area in 1927 which eventually led to the discovery of an overflow of oil that eventually made the area one of the largest oilfields in the world.

1 Yantras, Turkey

Several small fires have been burning continuously in a part of Antalya Province near the Olympic Valley for more than 2,500 years. These fires are kept alive by methane that emanates from the vents in the rocks.

Ruins of a temple dedicated to the blacksmith god Hephaestus have also been found on the site which makes it even more interesting. Perhaps it was one of the god’s blacksmith workshops.

While most visitors to the area come to watch the never-ending flame, others have been known to use the fire to brew tea or roast something edible.