This fiery pit has been blazing for years, a result of a natural gas drilling accident somewhere in the former Soviet union.
MATTHEW'S ISLAND
This fiery pit has been blazing for years, a result of a natural gas drilling accident somewhere in the former Soviet union.
MATTHEW'S ISLAND 
Awesome picture! Any more details about?
It’s in Turkmenistan (Central Asia, north of Iran/Afghanistan) and has been burning for over 40 years. Here’s a link:
https://en.wikipedia.org/wiki/Darvaza_gas_crater