Cause of death revealed for Big Sur hiker found dead in the wilderness

By New York Post (U.S.) | Created at 2026-07-23 21:00:54 | Updated at 2026-07-23 21:52:20 58 minutes ago

The cause of death for the hiker mysteriously found naked and dead in Big Sur has been revealed.

37-year-old Carlsbad native Joanna Ruth Shields died of “probable alcohol withdrawal seizures due to chronic alcohol use disorder,” the Monterey County Sheriff’s Office said.

A woman in a car making a peace sign, with a surfboard behind her.The cause of death for the hiker mysteriously found naked and dead in Big Sur has been revealed.
Joanna Shields smiling and wearing a black helmet and tank top.37-year-old Carlsbad native Joanna Ruth Shields died of “probable alcohol withdrawal seizures due to chronic alcohol use disorder,” the Monterey County Sheriff’s Office said.

Her body was found in a pool of water on Pine Ridge Trail near Sykes Hot Springs on April 9. She had a gash on her head and hikers claimed she had suspicious markings on her neck.

The cause of death appears to rule out a homicide. Cops previously shot down any suggestion she had been strangled, saying they believe the marks were possibly caused by ants.

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