The problem is actually talking about the Karakum Desert, which is I have answered the question mentioned in the "gates of hell" landscape.
Door of hell
This so-called Hell's Gate is located in the Karakum Desert landscape Dewei Ze village, which is a crater 70 meters wide, as has been raging fire burning, like hell, it is called the "gates of hell", the annual attracting countless visitors.
Significantly this Hell's Gate about 260 kilometers north of the capital of Turkmenistan, Ashgabat, golden yellow flames emitted place outside the village a few kilometers from Dewei Ze can see, and the president of Turkmenistan has ordered the fire fill this giant pit, but has not been implemented.
Why will always burn
In fact, "The Gates of Hell" This crater is not a natural formation, it was in 1971, the former Soviet Union geologists drilled into a large underground cavern when there are a lot of natural gas exploration in the area. Since underground drilling equipment landslides, finally form a 70 m-wide crater.
For fear of the giant pit release toxic gases, so scientists want to use fire, but did not expect a burn is several decades.
3.5 billion tons of oil? Enough with mankind 100 years
The data here is a big problem, first of all this pit in the end how much natural gas storage capacity up to now is actually not accurate figures, it is because this country is relatively backward Turkmenistan, its technological level is not sufficient exploitation of resources here, of course, nor to understand.
Secondly, this place has now become a tourist destination, can bring better returns to local, so there is no more need to figure out.
Finally, even if 35 million tons of oil, that's not enough human 100 years, since the 3.5 billion tons of oil a year less than human.