On California’s Mammoth Mountain, the powder is great, but the risks are real. When large snowfalls and intense winds merge into avalanches, things get risky on steep slopes.
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To keep thousands of skiers and snowboarders safe high in the Sierras, ski patrollers like Matt Seibert fight off dangerous avalanches using a not-so-secret weapon: World War II-era cannons.
Where’s JWS? He looked really skinny last time I saw him.