A Yakhchal is an ancient Persian ice storage facility designed to preserve ice in hot climates. Built primarily during the Sassanian era, these structures were made from mud bricks and featured thick walls to insulate the ice. The design often included a dome-shaped roof and a deep pit to store ice, which was harvested from nearby rivers or created during winter. Yakhchals were essential for cooling food and drinks before the advent of modern refrigeration. They played a crucial role in the daily lives of people in arid regions of Iran, showcasing the ingenuity of ancient engineering in managing natural resources.