A lovely shot of the famed Blombos Cave, where artifacts and signs of abstract human thought dating back 100,000 years have been discovered.

Read more about this spectacular site here:
http://www.academia.edu/5095196/Blombos_Cave_Lair_of_Our_Ancestor_Shellfishers

And here:
http://www.nature.com/news/human-evolution-cultural-roots-1.10025