Watched one of my favorite Saturday Matinee movies (i.e., movies I used to watch as a kid on Saturday afternoons on Channel 13 back in California): Crack in the World (1965).
The cover says it all:
THAN GOD IT'S ONLY A MOTION PICTURE!Science miscalculates ... underground Atom Bomb explodes earth's core ... and the world totters on the brink of destruction!
Today's Terrifying Look into What Might Happen Tomorrow!
I mean, who could ask for anything more? We got:

They just don't make moves like this any more 00 which is kind of a shame (though it has some of ther fans like me). Great fun, and bring the popcorn.Picked up a copy (not ... exactly ... issued by the copyright holder) on eBay, and don't regret it in the least.
Filed under :: Media - Movies
Gawd! That was one of my very favorite cheese-laden SF movies of my youth. Must get a DVD version!
It appears to be a perennial favorite for bootleg copies on eBay. Caveat emptor.
I dreamt last night that I had a copy of it on DVD.
Weird.