The preparations have survived sluggish construction throughout the region, ammonia leaks along the bobsled course, cost overruns and deadly avalanches as recently as December.

This is the third deadly avalanche to happen in British Columbia within a week.

Even though movies and news reports say that they "strike without warning," most deadly avalanches start when victims trigger them.

This is dangerous, as there are high mountains on each side of Lowari Top, and a deadly avalanche can come at any moment without warning.

The deadliest avalanche in American history killed 96 people, mostly railroad passengers who had been stranded by snow since February 24.

It's also been known for the deadly avalanches, which struck it time after time (see Salang avalanches.)

It was the deadliest avalanche to have occurred in Austria since March 2000.

Another is that only big slopes present the potential for a deadly avalanche.

It remains the deadliest avalanche on record in the United Kingdom.

Shock waves from those detonations thunder through the narrow pass, bringing down rumbling, deadly avalanches of rock and ice.