MOUNTAIN PASS, Calif. (KABC) -- Did you know that one of the largest rare earth mines in the world is in California? It's in the San Bernardino County community of Mountain Pass -- right by the 15 Freeway on the way to Las Vegas.

More than 200,000 drivers a day traverse the 15 Freeway through San Bernardino County, but as they pass Bailey Road at nearly 5,000 feet elevation, many don't realize they're passing a hidden gem just north of the freeway.

The MP Materials Mountain Pass Mine is one of the largest rare-earth mines in the world.

"It probably happened many billions of years ago, really, is what made this so special," said MP Materials' Chief Financial Officer Ryan Corbett about the open-air mine, which is nearly 500 feet deep. "It's almost a freak of nature... The way fault lines

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