A Primitive Map?

The picture below was taken as a line drawing from Michael Shafer's book "An Eye for a Horse". It shows a typical primaeval heavy tundra horse, as drawn by Palaeolithic man in caves at Les Combarelles in the Dordogne.

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I have speculated about what is drawn superimposed on the horse, and believe that it might be an early map, showing where horses may be found (and caught for a good meat supply) at a certain time of year.

Look at the annotated picture below, and see if you agree.

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The problem is: is this really what the original artist drew, or how a more recent one interpreted it?

Schafer, M., 1980, An Eye for a Horse, London: J.A.Allen and Company.