Figure 4From: The Altar Machine in the Church Mother of Gangi (Palermo, Italy). Interpretation of the past uses, scientific investigation and preservation challenge Some details of the damages in the Altar Machine. A) xylophages attack and scratches due to the use; B) xylophages attack and wood erosion; C) various kinds of stains and dirt layers; D) xylophages attack in the choir that encircles the Altar.Back to article page