Warli art is a beautiful folk art of Maharashtra, traditionally created by the tribal women. Tribals are the Warli and Malkhar koli tribes found on the northern outskirts of Mumbai, in Western India. Their extremely rudimentary wall paintings use a very basic graphic vocabulary: a circle, a triangle and a square. Their paintings were monosyllabic. The circle and triangle come from their observation of nature, the circle representing the sun and the moon, the triangle derived from mountains and pointed trees. Only the square seems to obey a different logic and seems to be a human invention, indicating a sacred enclosure or a piece of land. So the central motive in each ritual painting is the square, known as the "chauk" or "chaukat".