confusion in siberia. and with one final click of the castanets, a flamenco venue saying goodbye for the last time. so don't go away. next this week, we are in russia on the remote siberian peninsula of yamal. scientists there have noticed enormous blast holes appearing on the landscape and it has had them scratching their heads. so we thought we would catch up with them to find out more. i first heard about these craters when i was contacted by a reporter in 2014, i came back to my e—mail and thought this is a crazy e—mail i got, this person is talking about these craters and i didn't have accessibility to the news, ijust didn't believe it. i got back to the us and i read a little more and wow, this is a thing that happened.