26. Sep 2016. - 7. Oct 2016 Galley SEIHO TokyoI drill deep holes into a stone, then drill another hole to a point of the first hole from the other side.A stone starts to breath slowly when two holes connected in the stone. Then I excavate these holes from outside.This time, I left some single holes and excavated these from another side. Single holes are not connected with any other holes and are not through out.