The person at the center of this case
Michael Frank Prieto
Missing Person · Open
46 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 caused the canoe to overturn? Were there signs of struggle or accident?
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location
Lead #2Why were the canoe and items found at Entrance Island rather than along the intended Glacier Bay route?
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witness
Lead #3Were there any witnesses to Michael's departure or anyone who saw him in the area around Swanson Harbor?
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, Alaska. His overturned canoe and personal items were discovered on the beach at Entrance Island in Swanson Harbor, suggesting a possible water-related incident. Despite decades of investigation, the circumstances of his disappearance remain unclear, and his case remains open with the Alaska State Troopers.
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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.
💡
clue
Lead #4What personal items were recovered with the canoe, and what might they reveal about the circumstances?
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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
Canoe and items 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:July 3, 2026
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Phone: 9072695511
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Case Information
Incident:August 9, 1979
Last Updated:July 3, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9072695511
You can remain anonymous