TED cave talk
Posted: Aug 18, 2018 9:35 am32 graphic symbols in Ice Age cave art
https://www.youtube.com/watch?v=hJnEQCMA5Sg
https://www.youtube.com/watch?v=hJnEQCMA5Sg
Cavechat.org
The Official Caving Forum of the National Speleological Society
http://forums.caves.org/
TED cave talk
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Posted: Aug 18, 2018 9:35 am