Thule is the name given in ancient Greek and Roman literature for the most northerly part of the world. Around 300 BC the Greek navigator Pytheas claimed to have visited Thule, six days travel beyond Northern Britain. This may have been Iceland and in support of this idea a paper was submitted to the 2008 Atlantis Conferencein Athens by two Italian researchers, G. Giancarlo and M. Stucchi. In Germanic and Scandinavian traditions the name is applied to a long lost continent in the North Atlantic. Another candidate is the Estonian island of Saaremaa, which is also home to the (700BC (d) or 2000BC(b)) Kaali meteor crater field.
Just over a century ago, an extreme nationalistic German secret society called Germanenorden was founded and after a few years a schism in its ranks led to the Munich branch adopting the cover name of Thule-Gesellschaft. Some of its members sought to link Thule with Atlantis and the Aryans with the Atlanteans using some of the ideas of Helena Blavatsky and Jean-Silvain Bailly(a).
Karl Harrer, a member of the Thule Society along with the far-right politician Anton Drexler were founders of the German Workers Party (DAP) in 1919, two years later it changed its name to Nationalsozialistische Deutsche Arbeiterpartei, better known as the Nazi Party. The Thule Society faded with the establishment of the DAP, although there was a failed attempt to revive it in 1933.
Claims that most leading Nazis had been members of the Thule Society seems to be a gross exaggeration, having only had Rudolf Hess a member for a brief period.