Lot Essay
A Trace in the Wood in the Form of an Angle of 30° is one of two outdoor interventions executed by Jan Dibbets for the 1969 Earth Art exhibition at Cornell University in Ithaca. The large V shape that Dibbets marked in the landscape is a prime example of his main themes, which include the observation of light, perspective, and space. Dibbets once said: 'I make most of these works with ephemeral materials: sand, growing grass etc. These are demonstrations. I do not make them to keep but to photograph. The work of art is the photo.'