1972. David Helder directs performance event from the summit of Arthur's Seat, Edinburgh. Edinburgh Arts 1972.

3 - 28 July 1972. Performance event in Holyrood Park, Edinburgh, by Edinburgh Arts participants directed by American artist David Helder. Helder (foreground) signalling from the summit of Arthur's Seat to Edinburgh Arts participants on Salisbury Crags below. Edinburgh Arts 1972.