A yakhchāl (Persian: یخچال "ice pit"; yakh meaning "ice" and chāl meaning "pit") is an ancient type of ice house, which also made ice. . . . Records indicate th

A yakhchāl (Persian: یخچال "ice pit"; yakh meaning "ice" and chāl meaning "pit") is an ancient type of ice house, which also made ice. . . . Records indicate that these structures were built as far back as 400 BCE, and many that were built hundreds of years ago remain standing, where Persian engineers built yakhchāls in the desert to store ice, usually made nearby [0] Perhaps the earliest reference to icehouses comes from Shulgi, who held sway in the Sumerian city of Ur at the tail end of the third millennium bc. . . . Year 13, for Shulgi, was dubbed “Building of the royal icehouse/cold-house.” Jackson suggested such buildings might have been “timber-lined holes in the ground” designed to keep ice brought down from the mountains “cool and secure.” [1] 0. https://en.wikipedia.org/wiki/Yakhch%C4%81l https://en.wikipedia.org/wiki/Yakhch%C4%81l 1. https://www.laphamsquarterly.org/roundtable/do-you-want-build-icehouse https://www.laphamsquarterly.org/roundtable/do-you-want-buil...