Pitkin County authorities say a man who was found unconscious near the summit of Mount Sopris has died.

Rescue teams had responded Thursday after two women discovered Robert Baumgartner, 73, of Boulder, below the false summit of the 13,000-foot peak.

The two female hikers had performed CPR on Baumgartner, but were unable to revive him.

The county coroner's office is completing an investigation along with the sheriff's office.

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