Pigment of our Imagination.

The article focuses the efforts of archaeologists to explore humans' relationship with ochre. Topics discussed include studies of Rose Cottage Cave, where evidence of ochre use spans more than 60,000 years; use of Ochre in the Middle Stone Age, a period of about 50,000 to 280,000 years ago; and key archaeological sites such as Olorgesailie, Kenya;Blombos Cave, South Africa; and Northern Cape, South Africa.