A 51-year-old skier died late Friday after falling headfirst on a snow-covered stump at Copper Mountain Resort, authorities say.

Donald Hinckley of Austin, Texas, was pronounced dead at 11:59 p.m. at St. Anthony Hospital in Lakewood, said Joanne Richardson, Summit County coroner.

Hinckley was skiing slowly down the Far East Run at 10:30 a.m. on Jan. 14 when he collapsed and hit his head on the stump, Richardson reported.

He immediately went into cardiac arrest. Emergency workers flew Hinckley by helicopter to St. Anthony, where he died of traumatic brain injury and a fractured neck, she said.

Hinckley was wearing a helmet at the time, Richardson said.