A young woman survived a harrowing ordeal after her car hurtled 450 feet off a cliff in Napa County on Tuesday, rescuers said.

The accident occurred shortly after 9 a.m. in a heavily wooded area on a remote stretch of Highway 121 where it would have been easy for the car to go unnoticed by passersby for hours, according to the California Highway Patrol. Things could easily have ended tragically.