Other less impressive structures, now ruined, were built out of daga, or mud brick, below the hill complex once known as the Acropolis.  
The conical tower of its Great Enclosure has been interpreted as a phallic symbol, but was probably used for the storage of grain. Other less impressive structures, now ruined, were built out of daga, or mud brick, below the hill complex once known as the Acropolis.  Like the site as a whole, the soapstone bird carvings found in the ruins have been used as a nationalist emblem.  Its nineteenth century discoverers tried to link it with the gold mines of Ophir and the voyages of the Phoenicians, but scholars now agree that it was the indigenous predecessor of the Torwa state, built by the ancestors of the present-day Shona.  FTP, name these "houses of stone" between the Zambezi and Limpopo rivers, whose name now belongs to a modern African nation.
The conical tower of its Great Enclosure has been interpreted as a phallic symbol, but was probably used for the storage of grain.
Great Zimbabwe