Ski train safety

This time of year is traditionally boom time for Europe's ski resorts. But the winter sports season has been overshadowed by the death of 155 people in last month's ski train fire at Kaprun in Austria. It's prompted urgent inspections of similar railways in some of the biggest Alpine resorts. But with the cause of the accident still a mystery, there are questions about whether the trains should be running at all. The BBC's Russel Hayes reports.