Made up of long subterranean tubes with holes drilled on top at regular intervals, the ancient system of qanat allowed life to flourish on the Iranian plateau. On a road trip through the country, photographer Bijan Roghanchi visited a small village near Bam where one was still in use...
Check the pictures: http://www.theguardian.com/world/iran-blog/gallery/2015/oct/20/iran-qanat-ancient-water-system-pakam-pictures