Two others were found alive, but authorities are working on rescuing them.
The Pitkin County Sheriff's Office was first alerted to the missing hiker on Monday.
The missing person was on top of South Maroon Peak on Thursday around 10 a.m. at the time of his disappearance.
Authorities searched for the missing 31-year-old hiker for days before finding him
The hiker has not been officially identified yet.
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