During the Ice Age, no manmade artesian flow-ways called qanats built from the water tables in the mountains (Zagros and Albourz) were needed for agriculture in Iran, the qanats begun circa 1200 b. c., and used throughout history up to today, but in modern times, with Iran’s population now at 80 million (anciently just a few million), the qanats are not nearly enough, so wells are dug a thousand feet deep straight down beneath the flat farmland to the water table below ever declining.
