The Yuba County Five: The Unanswered Question of Why They Went Up Mountain

February 24, 1978: five friends drove home from a Chico basketball game and vanished. Their car was found on a remote Plumas National Forest road; four men were later recovered dead and Gary Mathias was never found. A Forest Service trailer, signs someone survived for weeks, and Gary’s shoes discovered in the shelter turned a disappearance into a haunting, unresolved case.Why they left a working car and walked into freezing, unfamiliar mountains—lost, following someone, coerced, or trapped by a chain of small errors—remains the central, unanswered question that keeps this story alive and uneasy decades later.