Cisco Grove Incident Case Files

Cisco Grove Incident

Case File

Sunday, May 17, 2026 03:49 (UTC)

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In September 1964, an aerospace engineer named Donald Shrum experienced one of the strangest and most overlooked encounters with apparent nonhuman intelligences in the United States. Separated from his hunting party in the Sierra Nevada mountains near Cisco Grove, California, Shrum decided to spend the night in a tree for safety.

The Cisco Grove Incident:
On Friday, September 4, 1964, Donald Shrum and two friends from his job at Aerojet made camp in a remote section of wilderness near the Loch Leven Lakes in an area called Cisco Grove, roughly 60 miles northeast of Sacramento, CA. The three men had planned a relaxing weekend of bow hunting for deer, but those plans would change later that evening as Shrum experienced an exhausting and terrifying UFO close encounter of the worst kind.