Explosion Phenomenon News Today

Looming. why? because of this steam-driven explosion phenomenon at the erupting kilauea volcano. it can propel steam sky ward and huge boulders. hawaii national park is closed indefinitely due to the threat. cnns chad myers joins us now. what a combination of stuff theyve had to deal with there. >> you think of the lava that flows downhill. ive stood on top of it and watched it go by on the big island. you dont expect this, boulders flying out of the top. the last time it happened, 1924. it coul...