Mount Hood, which is located about 70 miles east of Portland, is Oregon's tallest peak at approximately 11,240 feet, according to the U.S. Forest Service. It attracts more than 10,000 climbers each year, but it's a highly technical climb, requiring some planning and expertise.

The 26-year-old climber from Spokane became separated from his friend on the descent in "very foggy" conditions, the Clackamas County Sheriff's Office said.