- Ancestral Bushman (San) Rock Art - Overview of Rock Art by the San People in Southern Africa.
- Following Tracks - TRACCE Online Rock Art Bulletin paper on Namibian engravings and interpretation.
- Index to Twyfelfontein - Links to several research projects and concerns in respect to the Twyfelfontein rock art.
- Namibian Rock Art - Namibian Rock Art Photo's and descriptions by Grant S. McCall.
- Rock Art at Hoog Genoeg - Images of rock art on the Hoog Genoeg Farm near Omaruru.
- Rock Art at Süderecke, Namibia - Photo's and description of Rock Art at the Südenecke site.
- Rock Art of Twyfelfontein, Namibia - A Survey into the Relationship between Animal-Engravings and Cupules By Maarten van Hoek. Including the Site Report on Twyfelfontein by Sven Ouzman
- Southern African rock art - Rock art at Rice is an introduction to prehistoric and historic rock art with an emphasis on pictographs (paintings) and petroglyphs (engravings.
- Southern African Rock-Art Sites - Overview and relationship report on rock art sites in Southern Africa by Janette Deacon, in collaboration with members of the Southern African Rock Art Project.
- The Pre-Historical Period - Summary of pre-historical period of Namibia with special emphasis on Rock Art by Klaus Dierks.
- Twyfelfontein Rock Art Photos - Photo gallery of Twyfelfontein rock engravings.
