In Case 14, you’ll find clay vases used for water transport, including oinochoae, hydriae, and amphorae. These were found broken inside a cistern located in the courtyard of a public building on the hill where ancient Aiani stood. The cistern is circular, carved into natural rock, 8.5 meters deep, and coated with a thick layer of waterproof hydraulic mortar.

The construction of this cistern is a remarkable achievement of ancient engineering. Rainwater was collected and filtered using sand or pebbles placed in three small cavities around the perimeter. These were connected by channels at the corners of the central courtyard. Clean water was drawn using clay or bronze vessels. Pottery pipes and stone channels found nearby were likely used to carry water into buildings. Based on the pottery found in its interior, the cistern was in use from the 5^th to the 2^nd century BC.