Black Holes of Yamal... Interesting documentary!!!

A discovery of mysterious craters in the Yamal peninsula has left scientists baffled and social media abuzz with wild theories of aliens and stray missiles.
Since they first appeared in 2013, Russian scientists have located 17 of these holes and believe they are formed due to trapped methane and carbon dioxide escaping to the surface.
Are the researchers and locals close to solving the riddle of Siberia's giant craters?
https://t.me/documentaryplanet/670)2021
https://t.me/two_majors/9148