What was Gelsenkirchen known as during its coal mining heyday due to the flaring mine gases?
City of a Thousand Fires
City of a Thousand Lights
City of a Thousand Mines
City of a Thousand Smokes
Answer
During its coal mining heyday, Gelsenkirchen was known as the "city of a thousand fires" due to the flames of mine gases flaring at night. This nickname highlights the city's industrial past.
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