MegaFault is a 2009 television disaster film by The Asylum, directed by David Michael Latt, starring Brittany Murphy, Justin Hartley, Eriq Lasalle, Tamala Jones, Paul Logan and Bruce Davison.

Any further instability will cause massive earthquakes and tsunamis, devastating Los Angeles, San Francisco and other cities all around the Pacific Ocean, leading to the deaths of millions.

Dr. Lane and Boomer chase just behind the expanding crack in the Earth's crust, developing a plan to stop the next quake.

They realize that if the fault crosses the caldera it will explode, expelling several thousand tons of ash into the atmosphere, killing millions and causing a Volcanic winter.

In the end, an orbiting shot of the United States shows a giant canyon that stretches miles-wide across most of the continent.