https://www.smithsonianmag.com/science-nature/fire-in-the-hole-77895126/ https://www.smithsonianmag.com/science-nature/fire-in-the-ho... I heard about the phen

https://www.smithsonianmag.com/science-nature/fire-in-the-hole-77895126/ https://www.smithsonianmag.com/science-nature/fire-in-the-ho... I heard about the phenomenon before, but was stumped how long they can burn. >Many ancient fires like those still burn, from the Canadian Arctic to southeast Australia. Scientists estimate that Australia’s BurningMountain, the oldest known coal fire, has burned for 6,000 years. In the 19th century, explorers mistook the smoking summit for a volcano.