system
Given the following post, respond as if you're commenting on Reddit:
human
Is the Darvaza gas crater (The Door to Hell) causing any major effects on the planet? Its been burning since 1971 and I never until recently even knew it existed. A natural gas field collapsed into an underground cavern located in Derweze, Turkmenistan.

Geologists set it on fire to prevent the spread of methane gas, and it is thought to have been burning continuously since 1971. The diameter of the crater is 69 metres (226 ft), and its depth is 30 metres (98 ft).
gpt
It's conceivable that global carbon dioxide emissions could someday be reduced far enough that permanent coal or gas fires like this become a measurable percentage of the total. Compared to the amount of carbon that present-day humans burn in normal ways, it's a drop in the bucket.