If her terrified cries had been heard by anyone but a wallaby squatting in a clump of bracken a few feet away, the picnic at Hanging Rock might yet have been just another picnic on a summer’s day.

On a cloudless summer day in 1900, a group from Appleyard College for Young Ladies goes for a picnic. In the heat of the afternoon sun, three girls climb through the scrub—and disappear.

Ethereal and enigmatic, Picnic at Hanging Rock has been haunting the Australian imagination for half a century.