25-year-old Chicago woman Anna Bachman, who was visiting her family in San Diego over the weekend, fell to her death while posing for a picture on Sunset Cliffs in Ocean Beach Sunday.
Her sister reportedly witnessed her take one step too many and disappear over the edge down a 40- to 50-foot drop.
A witness told Chicago's WLS several people rushed over to help but were unable to revive her.
She was pronounced dead at the scene.
Lt. Paul Phillips with the San Diego Police Department told KPIX, "There were two nurses here that hussled down the cliff and began CPR and first aid, as well as a couple of surfers is my understanding. They did their best but it just wasn't meant to be."
Local media reported the area where Bachman fell isn't roped off, but is marked with several warning signs of unstable cliffs.
Police have ruled her death as an accident and do not believe alcohol was a factor.