Investigators are looking into a quarry accident that sent rocks raining down on the Cal State San Marcos campus in California. Big boulders, traveling at high-speed, dented the concrete buildings and rained down on cars in the parking lot, according to San Diego's KGTV news. The flying boulders pelted the windows and dented 70 cars.Investigators say they still don't know what caused the rocks to go flying in the wrong direction. "The blast resembled dozens that we've done. We're really mystified at this time," says Terry Tyson of Tyson Aggregates. Fortunately no one was hurt. But that may simply be because only a few students were on campus.
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