If you want to go down the "perpetually burning fires" rabbit hole I suggest reading up on the "Gates of Hell" in Turkmenistan https://en.wikipedia.org/wiki/Da

If you want to go down the "perpetually burning fires" rabbit hole I suggest reading up on the "Gates of Hell" in Turkmenistan https://en.wikipedia.org/wiki/Darvaza_gas_crater https://en.wikipedia.org/wiki/Darvaza_gas_crater