KEYSTONE, Colo. (AP) – A skier and a snowboarder were killed in two separate avalanches near Colorado ski areas on Tuesday.

An avalanche claimed the life of a 20-year-old Breckenridge man who was snowboarding with friends west of Arapahoe Basin. Later, an avalanche killed a skier in an unpatrolled area on the backside of Aspen Mountain, an official with the Pitkin County Sheriff’s Office said.

The first fatal snowslide was reported in an area of national forest land known as Fourth Steep Gully. The victim was snowboarding on steep, rock-lined chutes with four friends when the avalanche was triggered, said Summit County Sheriff Joe Morales.

The victim and one of his friends triggered a slide during one descent and their second descent set off the fatal avalanche, Morales said.

“Apparently they thought it was pretty cool so they did it again,” he said.

The Aspen avalanche occurred off ski resort territory. Further information was not immediately available.

Six people have been killed in Colorado avalanches so far this winter.