This is from a fabulous exhibit in the museum of the history of Amboise. An AV production was projected onto a table of sand about 2.5m x 1.2m on which were placed 5 flat stones. Visitors are invited to move the stones and/or the sand and the image follows and creates new patterns or scenes - this was the point of transition between two different scenes. It's a B&W image... but so was the projection at this point.
A simply superb use of 20 minutes of our afternoon.
