Blombos site plan and spatial distribution of Still Bay points.

<p>Each excavated square meter is subdivided in four quadrants (of 50x50 cm). Modified with permission after [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0131127#pone.0131127.ref058" target="_blank">58</a>].</p>