#DC-0172
Shaun Mackelprang
Active · still building data
last updated 30 August 2026 · 1 sources
Confirmed facts
5
Open questions
2
Missing date
20 Aug 2026
Found date
26 Aug 2026
This case is still developing. Get an email when the file updates.
Timeline of what's confirmed5 entries
20 August 2026
Shaun Mackelprang, 55, went missing in western Wyoming's Wind River mountain range after setting out to summit Gannett Peak.
CBS News, citing the Sublette County Sheriff's Office
20 August 2026
Mackelprang began his hike from the Green River Lake trailhead.
CBS News
26 August 2026
Ground search crews, drones and aircraft located Mackelprang near Scott Lake.
CBS News, citing the Sublette County Sheriff's Office
26 August 2026
Mackelprang was airlifted out by helicopter after he was located.
CBS News, citing the Sublette County Sheriff's Office
27 August 2026
Search and rescue crews had discovered Mackelprang's vehicle still at the Green River Lake trailhead after he was reported missing; the exact date of that discovery was not specified by CBS News.
CBS News
Open questionsunconfirmed · not conclusions
What exactly happened during Mackelprang's descent or return from the hike?unconfirmed; CBS News reported that family members were not yet aware of exactly what happened · unconfirmed
Did Mackelprang sustain any injuries during the time he was missing?unconfirmed; CBS News reported that a family member was not sure whether he had suffered injuries · unconfirmed
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