A cross-section illustration of a qānāt from page 12 of قنات سازى و قنات دارى/ "Qanat Construction and Maintenance," by بهنىا الکرىم عبد(ʻAbd al-Karīm Bihniyā). Markaz-i Nashr-i Dānishgāhī,1988.

A cross-section illustration of a qānāt from page 12 of قنات سازى و قنات دارى/ "Qanat Construction and Maintenance," by بهنىا الکرىم عبد(ʻAbd al-Karīm Bihniyā). Markaz-i Nashr-i Dānishgāhī,1988.
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