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Snowmobile riders listen as Ron Dellacroce explains how to read different types of snow and what to look for to determine what is dangerous.

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Winter warning signs

Avalanche training and rescue class teaches how to avoid dangerous conditions

It comes down to a crucial 15 minutes. Fifteen minutes is how long before a person caught in an avalanche asphyxiates, said Ron Dellacroce, park manager for Yampa River State Park and Elkhead Reservoir.


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