It's been 10 years since the worst accident in the history of the Metro-North Railroad happened in Valhalla, New York.

Ten years ago, a Harlem Line train slammed into an SUV at a crossing in Valhalla. Six were killed in the deadliest accident in the railroad's history.

Ten years ago, on a 26 degree night following a snowstorm, a Metro-North train filled with commuters slammed into a Mercedes SUV stopped on the tracks at the Commerce Street crossing in Valhalla.