Three snowmobilers were partially buried by debris when they were caught in an avalanche north of Granby on Saturday.

The slide happened on Gravel Mountain near Grand Lake just before 2:30 p.m. The Colorado Avalanche Information Center said that three or four people were caught in the avalanche, but were able to get out on their own or with the help of bystanders. It is believed to have been triggered by a snowmobile.

The victim was traveling on a terrain feature known as The Nose near Silverton, Colo., when the avalanche occurred on Thursday, officials said.

Few details were immediately available but a sheriff's office spokesperson said the avalanche was triggered around 4:45 p.m. in the "Fingers Area" on Berthoud Pass near Winter Park.

Sarah Steinwand, 41, of Crested Butte, Colorado, was caught in the debris of the avalanche in the backcountry near Silverton, but a man who was skiing with the snowboarder escaped

A snowmobiler was rescued after being buried in an avalanche, Colorado officials said. On Monday the snowmobiler was caught in an avalanche on Shrine Mountain in Vail Pass, according to an accident report by the Colorado Avalanche Information Center.

A snowboarder in Colorado's backcountry was killed in an avalanche west of Silverton on Thursday.

In a separate incident, four people caught in another avalanche escaped serious injury, Colorado officials say.