Kanda Construction
Kandas are indigenous water reservoirs in which water is collected during the rainy seasons and used during the summer. A single Kanda has a total volume of 300 cubic meter excavated from sandstone. The IRC and local communities improved this ancient design by plastering the porous rock, thereby making it completely waterproof; completing stone masonry work on the surrounding wall; and, as needed, fixing doors and filters for the intake and outlet to keep out contaminants. Thirty kandas were constructed in Zari district of Balkh Province.
http://pdf.dec.org/pdf_docs/PDABY646.pdf