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Steven Jonas Missing Person Case

Last seen in Moscow, Idaho on Jul 8, 1983

Victim Details

Apr 1, 2015

Sep 1, 2023

Steven

Jonas

71

28

68 inches

160 lbs

16 lbs

White / Caucasian

Male

Jul 8, 1983

Moscow

Idaho

Latah County

83843

No

23888

Klamath County Sheriff's Office

Klamath Falls

Oregon

Klamath County

97601

Nick Kennedy

Detective

3300 Vandenberg Road, Oregon

5418835130

County

Law Enforcement

https://www.klamathcounty.org/291/Sheriffs-Office

83-1192

Jul 8, 1983

Klamath County Sheriff's Office

Brown

Blue

Blue

Oct 10, 2026


Area Last Seen:

Case Description

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Summary based on the NamUs case record (MP28218) and 8 other sources
Steven Linne Jonas, a 28-year-old man from Moscow, Idaho, disappeared under mysterious circumstances on July 8, 1983. At the time, Steven was working as a seasonal maintenance employee at Crater Lake National Park in Oregon, a job he had held for several years. On the day of his disappearance, Steven was last seen near his vehicle, which had been found precariously perched on the edge of a cliff in Annie Creek Canyon. A visitor reported seeing Steven near the car, but by the time park rangers arrived, he had vanished without a trace.

The search for Steven included helicopters, search dogs, and volunteers, but despite these efforts, no evidence of his whereabouts was uncovered. Some reports indicated that Steven had been struggling with mental health issues, and on the day of his disappearance, he had made concerning comments about harming himself, which added a tragic dimension to his case. However, no physical remains or conclusive evidence of what happened to Steven have ever been found, and his case remains unsolved to this day. Authorities believe that his mental state may have played a role, but the exact circumstances of his disappearance continue to baffle investigators.
Last Seen: Jul 8, 1983

Links to Additional Sources (8)

See any mistakes? Let us know!
  • Missing Person / NamUs
  • Idaho Cold Cases - Technically, Steven Jonas is an ... - Facebook
  • U.S. Department of State Microfiche Documents
  • Technically, Steven Jonas is an Oregon case but since he was was ...
  • [PDF] Steven Linne Jonas - Klamath County, OR
  • Idaho - #Missing #Idaholostnmissing Steven Linne Jonas - July 8 ...
  • ID - Steven Jonas, 28, Moscow, 8 July 1983 | Websleuths
  • Steven Jonas Familiegeschiedenis & Historische Gegevens

    • Possible Unidentified Matches (1)

    Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

    76%Possible
    John Doe — Idaho - unidentified case UP10897
    John Doe — Idaho
    UP10897 • Found Sep 22, 1989
    View case
    Sex ✓Male
    Age 77%Est. 24–26 vs 28 when missing
    Race 100%White
    Location 95%28 mi away, same state
    TimingFound 6 years after last seen
    Height 100%5'8" vs 5'8"

    These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

    Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.

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    Forum Posts (2)

    Hey everyone, I've been digging into the Steven Linne Jonas case from 1983, and there's something... ...Read More
    07/24/2024
    Does anyone else find it unusual that Steven's vehicle was found so close to the cliff edge at Annie... ...Read More
    10/31/2023

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