From the website The Valley Observed:
The Valley Observed
On the morning of October 29, 1966, commuters in Malibu Canyon were shocked by a vision that seemed to appear overnight on a shear rock face. Cavorting on the cliff was a 60-foot-high, brilliant-pink figure of a joyfully nude maiden, clutching flowers. The mysterious Pink Lady became a national media sensation. Crowds came to gawk and to wonder who painted her—and how. Throngs grew as the mystery deepened. County officials declared the Pink Lady a traffic hazard and attempted to remove her, but high-pressure water sprays only made her gleam more brightly. Paint remover didn't work. On the ground, her admirers became protective, heckling the county crews and signing petitions that called efforts to erase the Pink Lady "prudish, inartistic, inhuman and apathetic."
When the creator stepped forward, shock reigned again. Lynne Seemayer, a 31-year-old artist and mother who lived in Northridge, had spent nights for several months hanging from ropes in the dark drawing the outline. In one marathon session, she applied the paint then went home to make breakfast for her kids. Acclaim and proposals of marriage rolled in, plus offers to join nudist groups. She also got hate mail and a bill from the county. People read all kinds of meaning into the Pink Lady, but Seemayer explained, "I did it simply as an art piece, and that was all." Fourteen gallons of drab gray paint ended the Pink Lady's short life—although for a decade afterward a faint outline could be glimpsed over the tunnel mouth.
I can almost still see her up there:
Google Street View
Lots of good stories of things that are gone:
http://www.americassuburb.com/gone.html