3000 years ago a Marvelous underground water system was constructed in Iran, known as qanat .
3000 years ago a Marvelous underground water system was constructed in Iran, known as qanat . A qanat is an underground Aqueduct that functions as a Sustainable watermanagement system. The construction of a qanat involves a series of carefully planned and engineered underground tunnels that tap into underground watersource, typically originating from mountains or hills. The tunnels slope gently downward, following the natural gradient of the terrain. The process of creating a qanat begins with the identification of a suitable water source, such as a groundwater reservoir. Skilled workers, often referred to as muqannΔ«s, manually excavate a vertical shaft from the surface down to the level of the water source. This shaft serves as the access point to the qanat system. Once the initial shaft is established, workers then dig horizontally along the water table to create a tunnel. The tunnel is meticulously excavated, maintaining a gentle downward slope to facilitate the flow of water. ...