A qanat is an ancient water supply system developed in Iran to transport water from an aquifer or well to the surface through an underground aqueduct. The system consists of a series of well-like vertical shafts connected by a gently sloping tunnel, allowing water to be transported over long distances with minimal evaporation. Qanats have been used for centuries in various parts of the world, including Asia, North Africa, and Europe, and are still used today in many areas. The construction of qanats requires a detailed understanding of subterranean geology and engineering sophistication.