Ancient Persians overcame climatic change by constructing elaborate tunnel systems called "Qanat" for extracting groundwater in the dry mountain basins, which allowed farmers to succeed when access to surface water was limited or impossible. The development of qanat technology has facilitated the harvesting of water for centuries in Iran. Although some archaeologists suppose the Romans had invented the qanat system, written records and recent excavations suggest that ancient Iran (Persia) was its actual birthplace. We present for the first time the results of OSL dating from spoil deposits associated with the Dasht-e-Bayaz qanats, where is nearby Dasht-e Bayaz fault in north-eastern of Iran. We therefore explore the possibility of dating qanat directly using the novel method of OSL and investigate the slip-rate of the Dasht-e-Bayaz fault. This region is chosen because of high antiquity of human civilization in Archeological aspect. After some difficulties with interpretation of single aliquot results, we were lead to use single grain dating, which has it's own aspects.
