California, 1969. The cliffs of Big Sur tremble with sound: Joni Mitchell sings to the gulls, Crosby, Stills, Nash & Young pour harmonies into the ocean wind, Joan Baez and Dorothy Morrison lift voices like prayer. It was not Monterey Pop, but its quieter, more intimate sister — Celebration at Big Sur, a documentary that captured that rare gathering of music and spirit.

Two years later, in 1971, the film’s release was marked with this very poster — bold, oversized, meant to command attention in a theater lobby. Never folded (unlike the vast majority), and now professionally mounted on foam core for protection, it has survived over five decades as clean and striking as the day it was printed.

A rare piece of counterculture history — more than a poster, it’s a window into one perfect moment when California’s cliffs became a cathedral of song.