Backfilling of the foundation of the ancient marble temple of Erechtheion on the north side of the Acropolis of Athens

Backfilling of the foundation of the ancient marble temple of Erechtheion on the north side of the Acropolis of Athens. The project involved the backfilling of the foundation of the temple with quartz sand of appropriate gradation, and other interventions that enabled the drainage of the rainwater from the temple.