On the morning of Tuesday, December the 5th, 2000, one of the world's most secretive and well-funded research facilities was the scene of the world's first ever catastrophic resonance cascade, a quantum event that, upon its initiation, would unleash a series of unstoppable events that would lead to the inevitable deaths of millions.

The quantum event that was unleashed at the Black Mesa Research Facility tore through the fabric of a dimensional rift that sent forth an unstoppable force of hostile and invasive creatures that turned one of the most reliable research institutions in the United States to a devastating war zone between the hostile and invasive creatures, the American government, and remaining Black Mesa personnel.

In the days and weeks after the disaster, the tragic events that unfolded that Tuesday morning devastated not only Black Mesa, but the world, after the resonance cascade expanded in severity and unleashed deadly "portal" storms that would kill millions worldwide.

This video explores the…