Excavation is a time based art project made of one canvas painted over in 13 action painting events. In the course of two years, the canvas has recorded every action, stroke, drip and rip creating layers hidden to the present but carefully documented for the future. Excavation is Naoki Iwakawa's action painting performance project. A single large canvas is painted in a series of 13 sessions creating layers of hidden paintings. Carlo Altomare accompanies each session, sometimes with other musicians. The object is to create a kind of archeological art object which contains in a single canvas the buried evidence of the series of painting performance events. These sessions began privately on Jan. 21, 2008, and are occasionally open to public performances. Each session is done with musicians and sometimes a human figure who lays on the canvas. When the series is finished the canvas will be presented in an installation with documentation (slides, video projections, audio, various objects) which offer evidence of the process at different stages.