The Boulder County Sheriff's Office said high winds hampered the rescue effort. Credit: Kelly Jensen, KUSA Author: Nate Lynn Updated: 5:44 PM MST January 14, 2021 BOULDER COUNTY, Colo. — A man has died after crashing into a tree while skiing at Eldora Mountain Ski Resort. The Boulder County Sheriff's Office (BCSO) said dispatchers received a call just before noon Thursday of a man who had sustained serious injuries in a skiing accident at Eldora. According to BCSO, witnesses saw the man fall and slide down the Corona Run at a high rate of speed before striking a tree. BCSO said given the steep terrain at the location of the accident, ski patrol transported the man to medical workers with AMR Ambulance and the Nederland Fire Department.