The orthostats, originally placed inside the palace, are in fact currently in an open-air space, subjected to various types of geological/environmental and structural/ mechanical decay. The wide thermal excursion (daily and annual), together with exposure to direct sunlight, erosion (the throne room is currently in a sort of pit that is below the current ground level), the deterioration of the stone itself, conceived for an enclosed space and now containing many cracks that in some cases are macroscopic, are among the major issues the Italian team had to face.