Qanat
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A qanāt or kārīz is a water supply system that was developed in ancient Iran for the purpose of transporting usable water to the surface from an aquifer or a well through an underground aqueduct. Orig
Channel of the Qanats of Ghasabeh in Iran's Razavi Khorasan Province, 2015.
Qanat in Iran's Kashan surfacing within the Fin Garden in 2005; it is thought to have served Tepe Sialk for thousands of years.
Kariz surfacing in Niavaran, a district in the Iranian capital city of Tehran, currently used for watering the grounds of the National Library and Archives of Iran, 2005.
Alluvial fan in southern Iran. Image from the Terra satellite, operated by NASA, 2004.
Oasis
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In ecology, an oasis is a fertile area of a desert or semi-desert environment that sustains plant life and provides habitat for animals. Surface water may be present, or water may only be accessible f
The desert oasis city of Jubbah in Saudi Arabia as photographed from space.
Irrigation canal within the Figuig Oasis in eastern Morocco
Oasis in Oman
Djerid Oasis, Tunisia