. >> one of the few people on earth to go deep inside is sam cosman and he is out front now.saw amazing pictures of volcanic lightning. then you see the lightning through the flame. i mean it just is stunning that this is actually happening in real life. what do you make of this when you see it? >> it's really incredible to see all of these forces of nature coming together in this one moment. it's really not very common where you can capture that on camera so to see that and share wit the world gets me excited. you know lightning, volcanic lightning is an area of science. it is still pretty unknown. there is a lot of conjecture around how it happens. again, one of the concepts that are talked about in the scientific community is there may be a variety of different types of lightning that occurred and it may be the case what we saw here is something completely new. >> that's just incredible that we can see something completely new. you, sam, have been inside an active volcano which is incredible to comprehend. i know you repelled down 1200 feet you went all the way to the bott