Massive underground methane explosion leaves 165-foot-deep crater in Siberia

A TV crew in Siberia stumbled across a 164-foot-deep crater, the likely result of an underground methane gas explosion. Since 2014, at least 17 of these giant holes have been uncovered. https://www.dailymail.co.uk/sciencetech/article-8687073/Massive-underground-methane-explosion-leaves-165-foot-deep-crater-Siberia.html?ns_mchannel=rss&ns_campaign=1490&ito=1490