flames. sam gives the thumbs up to this adventure of a lifetime. we have to admit playing with fire never looked so cool. juju chang, abc news, new york. >> incredible. >> yeah, it is, i mean makes your hands -- apparently five lakes in the world. he has visited four. he hopes to make all five. look, i mean, at the very bottom of the screen it doesn't look real. >> looks something out of a movie. so intense some of the lava splashed their camera and gear and melted it. >> amazing. sulphur dioxide, acid rain, acid that s stronger than that in your car battery. >> hear all about sam crossman's experience in a live interview later this morning on "good morning america." >> stay with us. >> announcer: this is abc's "world news now" -- informing insomniacs for two decades. ing insomniacs for two decades. >> announcer: this is abc's