De quoi est fait qanat
An underground channel that collects groundwater by gravity.
- Mother well shaft — a pour partie. A vertical shaft down to the aquifer.
- Underground water tunnel — a pour partie. A gently sloping tunnel through which water flows to the fields.
- Row of vertical access shafts — a pour partie. A chain of shafts for digging and ventilation.
- Gravity flow — utilise. Water flows by gravity.
- Argile — est fait de. Weak sections of a qanat were reinforced with clay rings.