. >> this video was beautifully captured by one of our favorites, jeff mamaley. these guys were rappelling down into the crater in the democrat ik re pub democratic republic of congo. you see the absolutely beautiful lava lake that is down below. it's boiling. the surface is cracked so you can see the fiery red in between the burning lava, it's amazing. >> i want to pitch right on that right where that guy is standing. it's probably deadly. i can just mansionimagine the sunset and the glow from below. >> there's a lot of sulfuric gases that come from below there. one, it's not going to smell good, two, it's probably not healthy. >> it just shows how earth is this living, moving, changing thing. even though we're all here together and it seems stationary, this just shows that the planet is still changing. >> the volcano is believed to be active since the late 1800s. they don't know exactly how long, but it doesn't matter. all you have to do is go there >> you guys are about to witness a miracle in six steps. the videos from brazil. right there, you see a man, a ta