AMERICAN SOUTHWEST TRADITIONAL OLLA. American Southwest traditional Olla which is roughly finished and unglazed with a rounded, bulbous body and a short neck with a slightly flared rim. The form is very typical of ollas used by various Native American tribes, such as the Pueblo or O'odham, for storing water. The rounded body provides a large volume, and the narrow neck minimizes evaporation. - Height: 11 inches. Estimate $100-150