Holger Kalweit is a German psychotherapist and ethnologist and something of a conspiracy theorist. In his Irrstern über Atlantis (Inferno over Atlantis) he follows Spanuth in identifying Heligoland as a remnant of Atlantis, which he claims was destroyed in 1222 BC by the comet Phaëton.
He sees Atlantis as the home of the white Nordic people. After the catastrophe he believes that the survivors en masse fled south to the Mediterranean, where they settled in what was later known as the Levant and Greece. According to Kalweit they were responsible for the Hellenic culture, whose influence is still felt today.
At this point most people would think that his ideas were questionable enough, but unfortunately there was worse to come. He goes on to claim that the Nordic gods were also brought to Greece, “but, unfortunately, their gods were not human beings, but reptiloid aliens.” Anyone for therapy?