The 30-year-old died when he was caught in avalanche on Mount Velan . Brother saw accident 'clearly ' , say police , and could only watch helplessly . Unnamed siblings were experienced skiers who lived in Switzerland . Deadliest winter in years on Swiss Alps with five people killed by avalanches .
The 30-year-old died when he was caught in avalanche on Mount Velan . Brother saw accident 'clearly ' , say police , and could only watch helplessly . Unnamed siblings were experienced skiers who lived in Switzerland . Deadliest winter in years on Swiss Alps with 28 people killed by avalanches .