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Aloys Krost Missing Person Case

Last seen in Lake Arrowhead, California on Oct 1, 2013

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Victim Details

Oct 18, 2013

Feb 14, 2018

Aloys

Krost

75

62

60 inches

70 inches

175 lbs

195 lbs

White / Caucasian

Male

Oct 1, 2013

Lake Arrowhead

California

San Bernardino County

14403

San Bernardino County Sheriff's Department

Twin Peaks

California

,

051301914

Oct 1, 2013

San Bernardino County Sheriff's Department

Brown

Blue

Blue

Oct 19, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP22343) and 9 other sources
Aloys Krost, a 62-year-old physics professor from Germany, went missing on October 1, 2013, while hiking the Pinnacle Trail in Lake Arrowhead, California. Krost was visiting the U.S. for a conference when he joined a group hike in the San Bernardino Mountains. At around 5:45 p.m., he became separated from his hiking companions and was never seen again. Despite being an experienced hiker and hunter, Krost had no hiking equipment with him when he vanished.

Extensive search efforts, including rescue teams and search dogs, were launched to find him, but no trace of Krost has been discovered. The search area, known for its rugged terrain, presented significant challenges. Investigators believe he likely became lost in the wilderness, but the lack of any physical evidence has left the case unsolved. Krost's disappearance remains a mystery, and authorities continue to seek information that could provide answers.
Last Seen: Oct 1, 2013

Links to Additional Sources (9)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP22343
  • Aloys Jakob Krost - The Charley Project
  • Search for missing hiker in Lake Arrowhead scaled back
  • Hiker Visiting From Germany Goes Missing Near Lake Arrowhead
  • Dr. Alois Krost - Missing near Lake Arrowhead
  • Mission 2013-030
  • LAKE ARROWHEAD: Search effort scaled down for missing German ...
  • Hiker found after being missing for 5 days - KBAK
  • Search Continues For Missing Hiker - VVNG.com - Victor Valley News

    • Possible Unidentified Matches (10)

    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.

    83%Moderate
    John Doe — Los Angeles, California - unidentified case UP17010
    John Doe — Los Angeles, California
    UP17010 • Found Jul 28, 2017
    View case
    Sex ✓Male
    Age 100%Est. 50–65 vs 62 when missing
    Race 100%White
    Location 85%64 mi away, same state
    TimingFound 4 years after last seen
    Height 100%5'7" vs 5'0"–5'10"
    Weight 100%182 lb vs 175–195 lb
    Hair 100%Brown vs Brown
    Eyes 100%Blue vs Blue
    82%Moderate
    John Doe — Los Angeles, California
    UP104480 • Found Mar 22, 2023
    View case
    Sex ✓Male
    Age 100%Est. 55–70 vs 62 when missing
    Race 100%White
    Location 85%63 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'6"–5'9" vs 5'0"–5'10"
    Weight 100%180–190 lb vs 175–195 lb
    Hair 100%Brown vs Brown
    Eyes 100%Blue vs Blue
    82%Moderate
    John Doe — Menifee, California
    UP100667 • Found Sep 9, 2021
    View case
    Sex ✓Male
    Age 100%Est. 58–72 vs 62 when missing
    Race 100%White
    Location 93%38 mi away, same state
    TimingFound 8 years after last seen
    Height 100%5'9" vs 5'0"–5'10"
    Weight 94%151 lb vs 175–195 lb
    Hair 40%Gray vs Brown
    Eyes 100%Blue vs Blue
    80%Moderate
    John Doe — Los Angeles, California - unidentified case UP55211
    John Doe — Los Angeles, California
    UP55211 • Found Jan 16, 2019
    View case
    Sex ✓Male
    Age 100%Est. 50–65 vs 62 when missing
    Race 100%White
    Location 86%60 mi away, same state
    TimingFound 5 years after last seen
    Height 100%5'8" vs 5'0"–5'10"
    Weight 100%198 lb vs 175–195 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue
    80%Moderate
    John Doe — Commerce, California - unidentified case UP13339
    John Doe — Commerce, California
    UP13339 • Found Jul 7, 2014
    View case
    Sex ✓Male
    Age 87%Est. 45–60 vs 62
    Race 100%White
    Location 87%58 mi away, same state
    TimingFound 9 months after last seen
    Height 100%5'5"–5'9" vs 5'0"–5'10"
    Weight 100%163 lb vs 175–195 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue
    80%Moderate
    John Doe — Long Beach, California - unidentified case UP13324
    John Doe — Long Beach, California
    UP13324 • Found Sep 6, 2014
    View case
    Sex ✓Male
    Age 100%Est. 55–70 vs 62
    Race 100%White
    Location 85%66 mi away, same state
    TimingFound 11 months after last seen
    Height 84%6'0" vs 5'0"–5'10"
    Weight 100%187 lb vs 175–195 lb
    Hair 40%Gray vs Brown
    80%Moderate
    John Doe — Buena Park, California - unidentified case UP12758
    John Doe — Buena Park, California
    UP12758 • Found Jul 1, 2014
    View case
    Sex ✓Male
    Age 100%Est. 50–65 vs 62
    Race 100%White
    Location 88%52 mi away, same state
    TimingFound 9 months after last seen
    Height 100%5'11" vs 5'0"–5'10"
    Weight 100%183 lb vs 175–195 lb
    Hair 40%Gray vs Brown
    Eyes 0%Brown vs Blue
    79%Possible
    John Doe — Los Angeles, California - unidentified case UP15982
    John Doe — Los Angeles, California
    UP15982 • Found Jun 26, 2016
    View case
    Sex ✓Male
    Age 85%Est. 55–75 vs 62 when missing
    Race 100%White
    Location 86%62 mi away, same state
    TimingFound 3 years after last seen
    Height 100%5'5"–5'10" vs 5'0"–5'10"
    Weight 67%127 lb vs 175–195 lb
    Hair 40%Gray vs Brown
    Eyes 100%Blue vs Blue
    78%Possible
    John Doe — Los Angeles, California - unidentified case UP78168
    John Doe — Los Angeles, California
    UP78168 • Found Mar 19, 2020
    View case
    Sex ✓Male
    Age 85%Est. 45–65 vs 62 when missing
    Race 100%White
    Location 84%68 mi away, same state
    TimingFound 6 years after last seen
    Height 100%5'5"–5'10" vs 5'0"–5'10"
    Weight 100%140–160 lb vs 175–195 lb
    Hair 40%Gray vs Brown
    Eyes 100%Blue vs Blue
    78%Possible
    John Doe — Colton, California - unidentified case UP54758
    John Doe — Colton, California
    UP54758 • Found Jan 6, 2018
    View case
    Sex ✓Male
    Age 100%Est. 58–72 vs 62 when missing
    Race 100%White
    Location 99%14 mi away, same county
    TimingFound 4 years after last seen
    Hair 100%Brown vs Brown

    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 (1)

    Aloys Krost, a 62-year-old physics professor from Germany, disappeared on October 1, 2013, while... ...Read More
    05/15/2024

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