Jeremiah 41:8

we have stores hidden In the East it is to this day a common custom to use "wells or cisterns for grain. In them the farmers store their crops of all kinds after the grain is threshed and winnowed. These cisterns are cool, perfectly dry, and tight. The top is hermetically sealed with plaster, and covered with a deep bed of earth." See Thomson, The Land and the Book, pp. 509 f.