posted on Mar, 2 2011 @ 06:37 AM
This is really fascinating and "the oldest feat of human engineering" in a city below the town of Kariz.
Thought others might appreciate this as well, as I stumbled upon it while surfing the net and hadn't ever heard of it before.
The Kish Qanat in Kariz, Iran is more than 2,500 years old and currently 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. The Qanat is an ancient system found in arid regions that brings groundwater from the mountains,
following a water-bearing formation (aquifer), and emerge at an oasis, through a series of tunnels. The tunnels perhaps several kilometers long, are
roughly horizontal, with a slope. This allows water to drain out to the surface by gravity to lower and flatter agricultural land. Considered to be
the oldest feat of human engineering, this system can be found still working in Iran.
The ancient water provision technology can be described as the greatest contribution made by Iranians to hydraulics. This system must have been
started at least 5000 years ago in Iran. The water from the qanat flowed in a natural underground stream between a layer of corals on the surface of
the island. The drinking water flowed from northeast of the Island to the sea and after 10 centuries it continues to flow.
To view the pics go here...
PS: If someone can embed, I'd much appreciate it, thanks in advance.