Towards eleven o'clock the lights gradually went out in the park as a flashing line of people wound its way slowly down the mountain.
This unannounced happening was an intervention by the artist Mary Kelly, who had placed three flashing lights on the bodies of a hundred women dressed only in black for Flashing Nipples Remix. Participants joined the continually growing line until the group arrived at the meadow in the park.  Once there, the women moved towards the audience head-on in one unbroken line, then formed choreographed patterns before disappearing into the crowd as suddenly as they had appeared on the hillside earlier.

The event was based on a similar action in the 1970s, when Flashing Nipples Remix was carried out as a protest against the Miss World contest. The contest had been chosen as a target because it was seen as an illustration of the exploitative, commercial representation of women in the mass media of the time. Mary Kelly participated in the demonstrations in London in 1971 and wrote a pamphlet on the history of the Miss World contest in the UK. The Flashing Nipple Street Theatre, initiated by the Women's Liberation movement, surprised both police and spectators by opening their coats to reveal luminous bicycle lights attached to their nipples and crotches.

In the Bergpark the visitors to the opening party were able to relate to the surprise of the original moment, thus becoming part of the first art action of documenta 12.