The original version of this chapter had only the first affiliation details updated for Dr. Ghilraen Laue. This has been corrected and the second affiliation details also has been updated as follows:

G. Laue

KwaZulu-Natal Museum, Pietermatritzburg, South Africa

Rock Art Research Institute, School of Geography,

Archaeology and Environmental Studies,

University of the Witwatersrand, South Africa

e-mail: glaue@nmsa.org.za

S. Challis • A. Mullen

Rock Art Research Institute, School of Geography,

Archaeology and Environmental Studies,

University of the Witwatersrand, South Africa

e-mail: sam@rockart.wits.ac.za; mullenalice@gmail.com