Officials say six people involved in a skier-triggered avalanche Sunday afternoon in Kananaskis Country west of Calgary were very lucky.

One person suffered minor injuries but everyone else walked away unscathed. The avalanche happened on the north side of Hero's Knob.

"Three people were fully buried and one was partially buried," said the Kananaskis Country Public Safety on Facebook. "All three full burials were recovered quickly by members of their own party and by other skiers in the area." 

Officials say rescue crews responded to a SPOT device activation and brought in a helicopter to get the party out. They were about 2,200 metres up the slope when the avalanche hit.

Kananaskis Country Public Safety said the avalanche occurred on the weak layer of snowpack tracing back to Feb. 10.

The layer has been a concern for much of the winter and officials say it will continue to be an issue until the end of the season.

The Canadian Avalanche Centre is recommending people be conservative in choosing their ski routes. Danger ratings in K-Country are rated at considerable for treeline and alpine terrain.