What is a Qanat/Kariz? http://en.wikipedia.org/wiki/Qanat
A qanat (from Arabic: قناة) or kareez (from Persian: كاريز) is a water management system used to provide a reliable supply of water to human settlements or for irrigation in hot, arid and semi-arid climates. The technology is known to have developed in ancient Persia[1][2][3], and then spread to other cultures, especially after the Muslim conquests, to the Iberian peninsula, southern Italy and North Africa. |
More info: http://www.wrm.ir/ircold/ancient.htm
Water has always played a key role in the long history of IRAN. Iranians are credited for qanats and the invention of Persian wheel, two ancient irrigation systems which are well known in the world. According to hereto the Greek historian, Qanat digging technique was documented and was practiced in the achaemenids era (550_330 BC) 2500 years ago. |
What are the longest and the deepest Qanats in the world?
Qanat (3000 year ancientness)A symbol of Iranian Identity and National skill in IrrigationName : Fahraj Qanat (Subterranean Canal)Length(km) : 20Depth(m) : 50Location: Yazd Province
And
http://www.citg.tudelft.nl/live/pagina.jsp?id=6bf6a1a3-d5a1-4d48-b4c6-cb25eaad5cb2&lang=en&binary=/doc/Smart%20and%20Ancient%20Engineering%20in%20Iran.ppt
The maximum depth of 340 meters, constructed in 2500 years ago (Gonabad, Iran) The deepest Qanat in the world 32 km long with 470 shafts |
What is the most wonderful Qanat in the world?
The Kish qanat is more than 2,500 years old, and currently it has been converted into an underground town at a depth of 16 meters below the surface, with an area of more than 10,000 sq m. |
More Pics: http://www.mehrnews.ir/fa/NewsDetail.aspx?NewsID=658104
Edited by Cyrus Shahmiri - 03-Apr-2010 at 07:55