There is also the story that phoenicians circumnavigated Africa [0]. As well as people that actually circumnavigated Africa with 3rd century BC shipbuilding technology[1]. Its an intereting thought, but I would treat it as speculation unless actual remains of phoenician ships are found far enough south.

[0]: http://www.livius.org/sources/content/herodotus/herodotus-on...

[1]: https://themediterraneantraveller.com/phoenician-ship-expedi...