Abstract: Employee #1 and seven other food service workers decided to ski down the mountain from a restaurant on a clear, moonlit night without the aid of any artificial lighting. Employee #1 and two coworkers became isolated from the main party, and after initially descending a closed trail, Employee #1 became separated from her two coworkers. After skiing straight down the trail for several hundred yards, she failed to negotiate a turn at an intersection with another ski run and a creek bed. Employee #1 lost control and departed from the boundaries of the ski trail, falling vertically approximately 17 feet off a culvert. She hit her head on rocks in the creek bed and was killed.