HOPI MOTHER EARTH SYMBOL
"The whole myth and meaning of the Emergence is expressed by one symbol known to the Hopis as the Mother Earth symbol. There are two forms, the square [yellow above] and the circular [red above].
Examples of these Labyrinth are carved on a rock south of Oraibi, and south of Shipaulovi. A combination of the two forms is also carved on a wooden stick which is planted in front of the One Horn altar in the Kwani kiva at Walpi during the W˙wuchim ceremony.
The symbol is commonly known as Tßpu'at [Mother and Child]. This type represents spiritual rebirth from one world to the succeeding one, as symbolized by the Emergence itself."
[taken from:The Book of the Hopi by Frank Waters; Penguin Books, 1985; p23]