The latest numbers show the resort has already received at least 7 feet of new snow within the last three days and more is expected.
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U.S. Route 395, the only way to get to Mammoth Mountain from the Los Angeles area, was shut down. Caltrans was working to get the highway reopened.
Officials were expecting a busy weekend at Mammoth Mountain and urged skiers to plan ahead, check road conditions and see what's currently open.
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