Door to hell is on the middle of the Karakum Desert. It is 60 meter wide and 20 meter deep. The fun fact is that it is not natural, and it was a result of mining this place. The natural gas made the crater start to burn.
It is related to what we learned this year because Door to hell is a big crater which is related to earth science. And it is related to what is below the surface of earth.
I learned about this in 4th grade. The textbook's units were mostly about earth science and we learned a lot about it. (I learned convection in Korean 5th grade) From here Peter was absent so I wrote this in first person view.