gianaameri
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not sure what this has to do with this thread, or diving for that matter, but they use the sun and stars for navigation. People have been doing this for centuries. The fact that some aborigines or islanders still do it today doesn't change the fact that we have better technology available today for this purpose.
Better technology?
Hmmmm....
They use another technique as well which is very applicable to cave diving (and compass is a diving tool).