Photo: Roadside boulder turns into rubble

Colorado Department of Transportation workers break apart a large boulder on Tuesday along U.S. Highway 550 in north Durango. Monsoon rain can seep into the cracks and crevices of roadside cliffs and trigger rockfall, CDOT says. The agency urges travelers to drive carefully during wet weather and report rocks on the road. (Jerry McBride/Durango Herald)


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