In 1975, Lubo Kristek quite unusual performance piece Promenade with a Neurotic Fox wearing this shoe. The relics of the performance pieces by Lubo Kristek bear the frequencies of the event. Sometimes they become also inspiration or material for another Kristek’s artwork. Kristek transformed the second shoe into a nest that become part of his assemblage Evolution Seismic Altar with a Liquid Sacramental Bread Forever Locked in Time.