This is a bit more exotic type of scholar. Basically Indiana Jones type who travels all around the world in search for new scientific facts. He could be a Archeologist, Geologist or something else.... These scholars might not yet have reached the top of the academic world and their travels often have the ultimate goal to find the discovery that finally will make their name known in among their colleagues worldwide. There are also freelancers who has left the academic insitutions for a more profitable pursuit. This could be everything from fulltime professional graverobber( selling the loot to museums worldwide) or a leader of sensationalist expeditions that serves very little scientific purpose( but sells stories to the press and the newly born movie industry).