A visit to the amazing Darvaza Gas Crater in the Karakum Desert in Northern Turkmenistan is an unforgettable experience.
The fires have been burning for close on 50-years now, the result of an accident when the Soviet authorities were drilling for natural gas.
The sunset in the desert is pretty ethereal as I hope this picture shows.

And here is that gas crater that I mentioned……

Darvaza, Turkmenistan 
Darvaza Gas Crater, Turkmenistan 
Darvaza Gas Crater, Turkmenistan 
Wilbur at the Darvaza Gas Crater, Turkmenistan

