INYO COUNTY — A man who went missing during a winter backpacking trip on Mount Whitney was found dead this week, apparently having been killed in a fall.

Altitude sickness and severe storm conditions likely contributed to the fatal error, said a statement from the Inyo County sheriff's office.

Eric Goepfert, 50, had left the Whitney Portal trailhead on Monday, Dec. 13, and planned to return on Friday, Dec. 17, the report said. His itinerary included reaching the 14,505-foot summit of Mount Whitney by the North Creek/Mountaineer's Route.

When he did not return on Dec. 17, his wife called the sheriff's office.

The Inyo Search and Rescue team found the man's rental car at the trailhead on Dec. 18. An aerial search then located his satellite communication device and a trekking pole at the base of the Ebersbacher Ledges, where the North Creek trail goes up a rugged chute just below 10,000 feet elevation.

A California Highway Patrol helicopter lowered a man on a cable, but he did not find any more signs of the missing hiker.

The following day, Sunday, four Inyo search-and-rescue members were lowered to the Ebersbacher Ledges by helicopter and others hiked from Whitney Portal.  Using an avalanche probe, they found Goepfert's body buried under snow near where the trekking pole was found.

Investigators believe he died on Dec. 14 after falling about 30 feet.

The sheriff's statement said the investigation found indications Goepfert had been experiencing headache and nausea, symptoms of acute altitude sickness. He was also carrying a heavy pack with winter supplies and contending with snow, high winds and single-digit temperatures as a major storm passed over the Eastern Sierra.

The statement did not list a city of residence for Goepfert; it said he had served in the U.S. Army and was an active Army reservist.

Whitney, the tallest peak in the conterminous United States, lies on the boundary of Sequoia National Park and Inyo National Forest.

The last known death on the mountain occurred in April 2021, when Saulo Sifuentes Escalante, 36, of Conroe, Texas, fell to his death while attempting a day hike to the summit.

The following month, another Texas man was rescued far off course and suffering from injuries and exposure after going missing during a late season snowstorm.