The conservation works
The monument’s walls were covered by deposits of soil, and nearly all its stone blocks presented major damage, including cracks, peeling, and flaking, while many blocks—above all those set at the springing of the antechamber and main chamber vaults—had crumbled. This resulted in the loss of material to a depth of 0.20m. from their face due to the separation and falling of fragments. Most of the damage and failures/faults in the stone blocks was caused by the weight of earth during antiquity and by the monument’s exposure to the environment (humidity, freezing temperatures).
The wall paintings were very poorly preserved. Work included cleaning, stabilizing painting surfaces and crowning with compatible mortar, and stabilizing detached mortars on the substrate with the use of grout made of compatible materials.