A deadly rockslide at Glacier National Park is prompting a warning about potential dangers for tourists. A family of five was driving along this popular Montana road when their car was hit by falling rocks, killing a 14-year-old girl inside the vehicle. Park officials confirm a car driven by a family of five from Utah was caught in a rock fall that generated enough debris to fill the bed of a pickup truck. Some of the stones were a foot in diameter. Meg Oliver reports.

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