Two snowboarders from Little Cottonwood Canyon came over Tuscarora into Big Cottonwood Canyon. They were trying to return back to Alta by booting up Millicent Peak on the Mary's side, and ended up above an open, in area traverse. They entered and descended from a closed area into an open part of the ski area. The first person came down, and was stopped by a Brighton Snow Safety person, who immediately radioed and closed the traverse to the public. He tried to stop the second boarder from descending, but was unable to. The second person triggered a slide, about 3 to 6 feet deep, 150 feet wide, and took a ride, but was uninjured. The slide put 6 feet of debris on a traverse that had been open only minutes before. They were taken to a Salt Lake County Sheriff.

Photo below - lower portion of the crown. Brighton Ski Patrol