The person at the center of this case
Michael Frank Prieto
Missing Person · Unsolved
47 years waiting · since 1979
Missing Person: Michael Frank Prieto
Justice for Michael Frank Prieto — the trail went cold in 1979, but the truth hasn't.
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Key leads to think about
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evidence
Lead #1What condition was the overturned canoe in, and could it indicate an accident or foul play?
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timeline
Lead #2How long between August 9 and August 25 before the canoe was discovered, and what weather or water conditions existed during that period?
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location
Lead #3Were there any other campsites or locations in Glacier Bay that Michael planned to visit that could provide clues?
Michael Frank Prieto, a 23-year-old, was last heard from on August 9, 1979, while preparing for a 20-day kayaking expedition in Glacier Bay near Juneau, Alaska. His overturned canoe and personal items were discovered on a beach at Entrance Island in Swanson Harbor, suggesting a possible water-related incident. Despite the discovery of his equipment, Michael's fate remains unknown, and investigators continue to seek information about what happened during his expedition.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
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witness
Lead #4Did any other kayakers or park visitors report seeing Michael or his canoe during the expedition?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP66712. Missing person: Michael Frank Prieto.
Last known contact: 1979-08-09 in Juneau, Juneau, AK. Circumstances: Michael was last heard from on 08/09/1979 prepping for a 20 day excursion in Glacier Bay.
His overturned canoe and personal items were found on the beach at Entrance Island in Swanson Harbor. Demographics: 23 years, Male, White / Caucasian.
Physical description: 5 ft 10 in, 150 lbs, hair: Blond/Strawberry, eyes: Brown. Investigating agency: Alaska State Troopers | LB790004507 | 1979-08-25.
Timeline of Events
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1979-08-09
Last contact before expedition
Michael was last heard from on August 9, 1979, while preparing for a 20-day excursion in Glacier Bay.
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1979-08-25
Equipment found
Michael's overturned canoe and personal items were discovered on the beach at Entrance Island in Swanson Harbor.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:August 9, 1979
Last Updated:October 20, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 9072695511
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Case Information
Incident:August 9, 1979
Last Updated:October 20, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9072695511
You can remain anonymous