Detail from a wall of stones in the Bosco

This test wall was the first one made using the technique selected for the veneer of the entire domain. The flat side of the stones looks outwards. When one looks at the wall from the side, none of the stones stick out. The assemblage was made directly on the wall by hand by placing the stones one by one inside a frame. This technique was abandoned during construction because it was too time-consuming. Initially the stones were calibrated. Because at the end of the construction there were not enough stones, some of the walls of the Villa Arson were covered with smaller stones, sometimes more spaced out.