Trackway findings support the notion of southern Africa being one region where human cognitive and practical ability developed a very long time ago.
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This was an area in which early anatomically modern humans survived, evolved and thrived, before spreading out of Africa to other continents.
The fossilised seal traces date back about 75,000 years.
These ancient surfaces, which often preserve the tracks in remarkable detail, are now amenable to inspection and interpretation.
Trackways made by vertebrates during the Pleistocene era, dating back to between 36 000 and 140 000 years helps with research into ancient animals.
