The search for Kim Crumbo has become a recovery mission; cause of death released for Mark O’Neill

Yellowstone National Park officials have confirmed that the search and rescue operation for Kim Crumbo has become a recovery mission. The cause of death for his brother, Mark O’Neill, has been determined; Mark died of exposure (hypothermia) and his remains were found on the east shore of Shoshone Lake. The two brothers were reported overdue by a family member on Sunday, September 19, 2021 when they didn’t return from their four-night backcountry trip to Shoshone Lake.

Help investigators:

If you have information that could help investigators piece together a timeline of events, or if you were in the Shoshone Lake area between September 12-19, 2021, please contact the NPS at 307-344-2428 or

More details at source link.


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    Joss Leal

    Joss Leal

    Joss Leal is an outdoor enthusiast, Clinical Mental Health Counseling graduate student with a Bachelor of Arts in Psychology and Business. Joss founded Missing NPF in October 2020, and maintains the Missing NPF database alongside a team of 3 dedicated ‘seekers’.

    About Missing NPF

    There is currently no centralized database for those who have gone missing in National Parks and/or Forests at the federal level.

    We have established this listing in an effort to provide a holistic measure of assistance, both to inform future search efforts and to establish an assistive resource for those who are currently living with the loss of a loved one. 

    Missing NPF supports the call for federal agencies to establish, maintain, and share a full listing of those missing in U.S. National Parks and Forests. Meanwhile, we have established our own, and seek your collaboration in providing a meaningfully-detailed source by which to expand public knowledge, identify trends, and empower future search efforts. Join us on this mission.